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<s> Chọn đáp án đúng với câu hỏi: With so many daily design resources, how do you stay-up-date with technology without spending too much time on it?
A. connect to the Internet all day
B. update new status
C. use social network daily
D. get latest information Đáp án là: D. get latest information </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Theo thuyết tiến hóa hiện đại, tổ chức sống nào sau đây là đơn vị tiến hóa cơ sở?
A. Cá thể.
B. Quần xã.
C. Hệ sinh thái.
D. Quần thể. Đáp án là: D. Quần thể </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Physically inactive people are at risk of developing heart disease.
A. dynamic
B. active
C. lively
D. passive Đáp án là: D. passive </s> | [
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<s> Chọn đáp án đúng với câu hỏi: X là hỗn hợp chứa 1 axit, 1 ancol, 1 andehit đều đơn chức, mạch hở có khả năng tác dụng với Br 2 trong CCl 4 và đều có ít hơn 4 nguyên tử C trong phân tử. Đốt cháy hoàn toàn 0,1 mol X cần 0,35 mol O 2. Mặt khác, cho 0,1 mol X vào dung dịch NaOH dư thì thấy có 0,02 mol NaOH phản ứng. Nếu cho 14,8 gam X vào dung dịch nước Br 2 dư thì số mol Br 2 phản ứng là
A. 0,65
B. 0,50
C. 0,40
D. 0,35 Đáp án là: C. 0,40 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhược điểm chính của ngành vận tải đường sắt là
A. đòi hỏi đầu tư lớn để lắp đặt đường ray.
B. đầu tư lớn để xây dựng hệ thống nhà ga.
C. chỉ hoạt động được trên các tuyến đường cố định có đặt sẵn đường ray.
D. tốc độ vận chuyển nhanh, an toàn cao. Đáp án là: C. chỉ hoạt động được trên các tuyến đường cố định có đặt sẵn đường ray. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vật đang chuyển động với vận tốc 25 m/s thì trượt lên dốc. Biết dốc dài 50 m, đỉnh dốc cao 14 m, hệ số ma sát giữa vật và mặt dốc là μ t = 0, 25. Cho g = 10 m /s 2. Vận tốc của vật ở đỉnh dốc là
A. 33,80 m/s.
B. 10,25 m/s.
C. 25,20 m/s.
D. 9,75 m/s. Đáp án là: B. 10,25 m/s. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: X 3 + có cấu hình electron là: 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 5. Vị trí của nguyên tố X trong bảng tuần hoàn là
A. ô số 26, chu kì 4 nhóm VIIIA.
B. ô số 26, chu kì 4, nhóm IIA.
C. ô số 26, chu kì 3, nhóm VIIIB.
D. ô số 26, chu kì 4, nhóm VIIIB. Đáp án là: D. ô số 26, chu kì 4, nhóm VIIIB </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất sau: HO-CH 2 -CH 2 -OH; CH 3 -CH 2 -CH 2 -OH; CH 3 -CH 2 -O-CH 3 ; HO-CH 2 -CH(OH)-CH 2 -OH; CH 3 -COOH; CH 3 -CH=O và HCOOCH 3. Số chất hòa tan được Cu(OH) 2 ở nhiệt độ phòng là
A. 5.
B. 3.
C. 4.
D. 2. Đáp án là: B. 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khó khăn lớn nhất trong việc xuất khẩu các sản phẩm chăn nuôi của nước ta trong giai đoạn hiện nay là
A. giá trị dinh dưỡng của sản phẩm thấp.
B. nguồn thức ăn cho chăn nuôi chưa được đảm bảo.
C. công tác kiểm dịch, vệ sinh an toàn thực phẩm chưa được chú ý đúng mức.
D. giá thành sản phẩm còn cao. Đáp án là: C. công tác kiểm dịch, vệ sinh an toàn thực phẩm chưa được chú ý đúng mức. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: People believed that what they do on the first day of the year will _______ their luck during the whole year.
A. control
B. influence
C. exchange
D. result Đáp án là: B. influence </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở sinh vật nhân sơ, một chuỗi pôlipeptit được tổng hợp đã cần 499 lượt tARN. Trong các bộ ba đối mã của tARN có A = 447; ba loại còn lại bằng nhau. Mã kết thúc của mARN là UAG. Số nuclêôtit mỗi loại của mARN làm khuôn cho sự tổng hợp chuỗi pôlipeptit nói trên là?
A. A = 448; X =350; U = G = 351.
B. U = 447; A = G = X = 351.
C. U = 448; A = G = 351; X = 350.
D. A = 447; U = G = X = 352. Đáp án là: A. A = 448; X =350; U = G = 351. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 5 gam kẽm viên vào cốc đựng 50ml dung dịch H 2 SO 4 4M ở nhiệt độ thường (25 o C). Có các tác động sau: (a) Thay 5 gam kẽm viên bằng 5 gam kẽm bột. (b) Thêm 50 ml dung dịch H 2 SO 4 4M nữa. (c) Thay 50 ml dung dịch H 2 SO 4 4M bằng 100ml dung dịch H 2 SO 4 2M. (d) Đun nóng dung dịch. Số trường hợp tốc độ phản ứng không đổi là
A. 3
B. 1
C. 4
D. 2 Đáp án là: B. 1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chiến tranh thế giới thứ hai được mở đầu bằng sự kiện nào?
A. Quân Đức chiếm Tiệp Khắc.
B. Sát nhập Áo vào Đức.
C. Quân Đức tấn công Ba Lan.
D. Anh tuyên chiến với Đức. Đáp án là: C. Quân Đức tấn công Ba Lan. </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Từ glucozo, có thể điều chế cao su buna theo sơ đồ sau đây : Glucozơ → ancoi etylic → buta-1,3-dien → cao Su Buna. Biết hiệu suất của quá trình điều chế là 75%, muốn thu được 32,4 kg cao Su thì khối lượng glucozơ cần dùng là
A. 144 kg.
B. 108 kg.
C. 81 kg.
D. 96 kg. Đáp án là: A. 144 kg. </s> | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hệ số của số hạng chứa x^10 trong khai triển biểu thức (x^2+2x+5)^6 thành đa thức bằng
A. 12.
B. 460.
C. 90.
D. 1815. Đáp án là: C. 90. </s> | [
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1,
1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 15, đô thị có quy mô dân số (năm 2007) lớn thứ hai ở Đông Nam Bộ là:
A. Vũng Tàu.
B. TP. Hồ Chí Minh.
C. Thủ Dầu Một.
D. Biên Hòa Đáp án là: D. Biên Hòa </s> | [
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2... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: 2 phút 15 giây =.... giây?
A. 135
B. 115
C. 145
D. 125 Đáp án là: A. 135 </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các chất: CH 2 =CH-CH=CH 2 ; CH 3 -CH 2 -CH=C(CH 3 ) 2 ; CH 3 -CH=CH-CH=CH 2 ; CH 3 -CH=CH 2 ; CH 3 -CH=CH-COOH. Số chất có đồng phân hình học là:
A. 4.
B. 3.
C. 2.
D. 1 Đáp án là: C. 2. </s> | [
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2... | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Điểm khác biệt của giai cấp công nhân Việt Nam so với giai cấp công nhân ở các nước tư bản Âu - Mĩ là
A. ra đời trước giai cấp tư sản Việt Nam.
B. ra đời sau giai cấp tiểu tư sản Việt Nam.
C. ra đời cùng giai cấp tư sản Việt Nam.
D. ra đời sau giai cấp tư sản Việt Nam. Đáp án là: A. ra đời trước giai cấp tư sản Việt Nam. </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Xà phòng hóa hoàn toàn este X (chỉ chứa nhóm chức este) trong dung dịch NaOH, thu được hỗn hợp các chất hữu cơ gồm: CH 3 COONa, NaO-C 6 H 4 CH 2 OH và H 2 O. Công thức phân tử của X là
A. C 11 H 12 O 4.
B. C 9 H 10 O 4.
C. C 10 H 12 O 4.
D. C 11 H 12 O 3. Đáp án là: A. C 11 H 12 O 4. </s> | [
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1,
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1,
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1,
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1,
1,
1,
1,
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong hiện tượng giao thoa sóng, những điểm trong một môi trường sóng là cực đại giao thoa khi hiệu đường đi của sóng từ hai nguồn kết hợp, cùng pha tới là
A. d 2 – d 1 = kλ
B. d 2 – d 1 = (2k + 1)0,5λ
C. d 2 – d 1 = (2k + 1)λ
D. d 2 – d 1 = 0,5kλ Đáp án là: A. d 2 – d 1 = kλ </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D the word that has the underlined part different from others.
A. t y phoon
B. countr y
C. definitel y
D. definitel y Đáp án là: A. t y phoon </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blank 10.
A. for
B. in
C. toward
D. with Đáp án là: B. in </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các muối sau : NaHCO 3 ; NaHSO 4 ; Na 2 HPO 3 ; NaHSO 3 ; (NH 4 ) 2 CO 3 ; Na 2 HPO 4. Số muối axit là:
A. 3
B. 4
C. 5
D. 6 Đáp án là: B. 4 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nội dung chính của đoạn trích sau: “ Con đường hình thành bản sắc dân tộc của văn hóa không chỉ trông cậy vào sự tạo tác của chính dân tộc đó mà còn trông cậy vào khả năng chiếm lĩnh, khả năng đồng hóa những giá trị văn hóa bên ngoài. Về mặt đó, lịch sử chứng minh là dân tộc Việt Nam có bản lĩnh”
A. Một số nhận xét về vấn đề văn hóa của dân tộc
B. Đặc điểm của văn hóa Việt Nam
C. Con đường hình thành bản sắc văn hóa dân tộc
D. Tất cả các đáp án trên Đáp án là: C. Con đường hình thành bản sắc văn hóa dân tộc </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho biết các gen phân li độc lập và không xảy ra đột biến. Một cây có kiểu gen dị hợp tử về 2 cặp gen tự thụ phấn thu được F 1. Khi nói về tỉ lệ các loại kiểu gen, kết luận nào sau đây không đúng?
A. Số cá thể có kiểu gen đồng hợp về 2 cặp gen có tỉ lệ bằng 25% tổng số cá thể được sinh ra.
B. Số cá thể có kiều gen đồng hợp về 1 cặp gen có tỉ lệ bằng số cá thể có kiểu gen dị hợp về 1 cặp gen.
C. Số cá thể có kiểu gen đồng hợp về 2 cặp gen có tỉ lệ bằng số cá thể có kiểu gen dị hợp về 2 cặp gen.
D. Số cá thể có kiểu gen dị hợp về 1 cặp gen có tỉ lệ bằng số cá thể có kiểu gen dị hợp về 2 cặp gen. Đáp án là: D. Số cá thể có kiểu gen dị hợp về 1 cặp gen có tỉ lệ bằng số cá thể có kiểu gen dị hợp về 2 cặp gen </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
14542,
289,
347,
31500,
30103,
29873,
5777,
30103,
29883,
2531,
1374,... | [
1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Hòa tan hết m gam hỗn hợp gồm Mg, Al và Zn trong dung dịch H N O 3 loãng (dùng dư), kết thúc phản ứng thu được dung dịch X có khối lượng tăng m gam. Cô cạn cẩn thận dung dịch X thu được a gam hỗn hợp Y chứa các muối khan, trong đó phần trăm khối lượng của oxi chiếm 60,111% Nung nóng toàn bộ Y đến khối lượng không đổi thu được 18,6 gam hỗn hợp các oxit. Giá trị của a là
A. 70,12
B. 64,68
C. 68,46
D. 72,10 Đáp án là: B. 64,68 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Yếu tố quan trọng nhất tạo nên tính đặc trưng của phân tử ADN là
A. Số lượng các nucleotit trong phân tử ADN
B. Thành phần các nucleotit trong phân tử ADN
C. Trình tự sắp xếp các nucleotit trong phân tử ADN
D. Cách liên kết giữa các nucleotit trong phân tử ADN Đáp án là: C. Trình tự sắp xếp các nucleotit trong phân tử ADN </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tam giác đều ABC. Hãy xác định góc quay của phép quay tâm A biến B thành C?
A. φ=30°
B. φ=90°
C. φ=−120°
D. φ=60° hoặc φ=-60° Đáp án là: D. φ=60° hoặc φ=-60° </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chiếu tia sáng trắng từ không khí vào một bản thuỷ tinh có bề dày 10 cm dưới góc tới 60 0. Biết chiết suất của thủy tinh đối với tia đỏ và tia tím lần lượt là 1,547; 1,562. Tính khoảng cách giữa hai tia ló đỏ và tím.
A. 0,83 cm.
B. 0,35 cm.
C. 0,99 cm.
D. 0,047 cm. Đáp án là: D. 0,047 cm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A. undergradu ate B. doctor ate C. negoti ate D. ultim ate
A. undergradu ate
B. doctor ate
C. negoti ate
D. ultim ate Đáp án là: C. negoti ate </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các polime sau: (1) poli(metyl metacrylat); (2) tơ capron; (3) nilon-6,6; (4) poli(etylen- terephtalat); (5) poli(vinylclorua); (6) poli(vinyl axetat). Các polime có thể tổng hợp bằng phản ứng trùng hợp là:
A. (2), (3), (4), (6).
B. (1), (2), (4), (6).
C. (1), (2), (5), (6).
D. (1), (2), (3), (5). Đáp án là: C. (1), (2), (5), (6). </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC với độ dài 3 cạnh BC, AC, AB lần lượt là a, b, c. Khẳng định nào dưới đây đúng?
A. a^2 = b^2 + c^2 + 2bcsinA;
B. a^2 = b^2 + c^2 – 2bccosA;
C. a^2 = b^2 + c^2 – 2acsinA;
D. a^2 = b^2 + c^2 + 2abcosA. Đáp án là: B. a^2 = b^2 + c^2 – 2bccosA; </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hai nguồn sóng giống nhau S 1, S 2 có biên độ 2 cm đặt lần lượt tại hai điểm A, B cách nhau 40 cm. Cho bước sóng bằng 0,6 cm. Điểm C thuộc miền giao thoa cách B một đoạn 30 cm dao động với biên độ cực đại. Giữa C và đường trung trực của đoạn AB còn có 2 dãy cực đại khác. Nếu dịch chuyển nguồn S 1 đến điểm C thì tại A biên độ dao động của sóng là
A. 1 cm
B. 0
C. 4 cm
D. 2 cm Đáp án là: C. 4 cm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hai vectơ được gọi là bằng nhau khi và chỉ khi
A. Giá của chúng trùng nhau và độ dài của chúng bằng nhau
B. Chúng trùng với một trong các cặp cạnh đối của một hình bình hành
C. Chúng trùng với một trong các cặp cạnh đối của một tam giác đều
D. Chúng cùng hướng và độ dài của chúng bằng nhau Đáp án là: D. Chúng cùng hướng và độ dài của chúng bằng nhau </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho bột Fe vào dung dịch hỗn hợp NaNO 3 và HCl đến khi các phản ứng kết thúc, thu được dung dịch X, hỗn hợp khí NO, H 2 và chất rắn không tan. Các muối trong dung dịch X là
A. FeCl 2, Fe(NO 3 ) 2, NaCl, NaNO 3.
B. FeCl 2, NaCl.
C. FeCl 3, NaCl.
D. Fe(NO 3 ) 3, FeCl 3, NaNO 3, NaCl. Đáp án là: B. FeCl 2, NaCl. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Gọi (H) là hình phẳng giới hạn bởi đồ thị hàm số y = xlnx, trục hoành và các đường thẳng x=1; x=e. Tính thể tích V khối tròn xoay thu được khi quay hình (H) xung quanh trục
A. V=((5e^3−2)π)/27.
B. V=(5e^3−2)/27.
C. V=((5e^3+2)π)/27.
D. V=((5e^3−2)π^2)/27. Đáp án là: A. V=((5e^3−2)π)/27. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vào mùa hạ dải hội tụ nhiệt đới gây mưa cho nhiều vùng ở nước ta dải hội tụ nhiệt đới được hình thành do sự tiếp xúc của 2 khối khí là
A. ôn đới hải dương và chí tuyến hải dương.
B. chí tuyến hải dương và chí tuyến lục địa.
C. chí tuyến hải dương và xích đạo hải dương.
D. xích đạo hải dương bán cầu Bắc và xích đạo hải dương bán cầu Nam. Đáp án là: D. xích đạo hải dương bán cầu Bắc và xích đạo hải dương bán cầu Nam </s> | [
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190,
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29875,
29901,
12549,
30712,
29877,
3887,
30712,
29874,
447,
31214,
1146,
207,
140,
... | [
1,
1,
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1,
1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X gồm hai muối R 2 CO 3 và RHCO 3. Chia 44,7 gam X thành ba phần bằng nhau: - Phần một tác dụng hoàn toàn với dung dịch Ba(OH) 2 dư, thu được 35,46 gam kết tủa. - Phần hai tác dụng hoàn toàn với dung dịch BaCl 2 dư, thu được 7,88 gam kết tủa. - Phần ba tác dụng tối đa với V ml dung dịch KOH 2M. Giá trị của V là
A. 200
B. 70
C. 180
D. 110 Đáp án là: C. 180 </s> | [
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1,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Vùng nhìn thấy của gương cầu lồi như thế nào so với gương phẳng có cùng kích thước.
A. Hẹp hơn
B. Rộng hơn
C. Bằng nhau
D. Tùy theo gương lồi ít hay nhiều Đáp án là: B. Rộng hơn </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Tại sao sau khi các nước Cộng hòa ly khai khỏi Liên bang Cộng hòa Xã hội chủ nghĩa Xô Viết, nhưng trong cộng đồng SNG được thành lập sau đó Liên bang Nga vẫn giữ vai trò lãnh đạo?
A. Do các quốc gia này muốn hỗ trợ nhau cùng phát triển
B. Do quan hệ gần gũi với Liên Xô trước đây
C.Do được nhận viện trợ tài chính từ Nga
D. Do sự lệ thuộc vào nguồn khí đốt của Nga Đáp án là: D. Do sự lệ thuộc vào nguồn khí đốt của Nga </s> | [
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872,
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12507,
413,
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5777,
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29883... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong cuộn dây dẫn kín xuất hiện dòng điện cảm ứng xoay chiều khi số đường sức từ xuyên qua tiết diện S của cuộn dây
A. luôn luôn tăng.
B. luôn luôn giảm.
C. luân phiên tăng, giảm.
D. luôn luôn không đổi. Đáp án là: C. luân phiên tăng, giảm. </s> | [
1,
1,
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1605,
549,
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31500,
29891,
1146... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một chất điểm dao động điều hòa với phương trình của vận tốc là v = 5πcos(πt + π/3) m/s. Gia tốc cực đại của chất điểm là
A. 5π 2 m/s 2.
B. 5π 2 m/s.
C. 5π 2 cm/s.
D. 5π 2 cm/s 2. Đáp án là: A. 5π 2 m/s 2. </s> | [
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1,
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hòa tan m gam hỗn hợp Na 2 CO 3 và KHCO 3 vào nước để được 400 ml dung dịch X. Cho từ từ 100 ml dung dịch HCl 1,5M vào dung dịch X, thu được dung dịch Y và 1,008 lít khí (đktc). Cho Y tác dụng với Ba(OH) 2 dư thu được 29,55 gam kết tủa. Cho từ từ dung dịch X vào bình đựng 100 ml dung dịch HCl 1,5M, thu được V lít khí (đktc). Giá trị của m và V lần lượt là
A. 20,13 và 2,688.
B. 20,13 và 2,184.
C. 18,69 và 2,184.
D. 18,69 và 2,688. Đáp án là: B. 20,13 và 2,184. </s> | [
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1,
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30128,
29976,
29886,
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865,
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29875,
274,
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298,
228,
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29875,
29901,
8335,
30712,
29874,
10345,
286,
24988,
5089,
31500,
30478,
29876,
508... | [
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1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho cấp số nhân (u_n) có u_3=24 và u_4=48. Tổng năm số hạng đầu tiên của cấp số nhân đó bằng
A. 168
B. 186
C. -186
D. 196 Đáp án là: B. 186 </s> | [
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho 75 gam dung dịch fomalin tác dụng với lượng dư dung dịch AgNO 3 /NH 3 (đun nóng nhẹ). Sau khi phản ứng xảy ra hoàn toàn thu được 432 gam bạc. Nồng độ của HCHO trong fomalin là
A. 30%.
B. 37%.
C. 35%.
D. 40%. Đáp án là: D. 40% </s> | [
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305,
285,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một xe ô tô chở hành khách chuyển động đều trên đoạn đường 54 km, với vận tốc 36 km/h. Thời gian đi hết quãng đường đó của xe là:
A. 2/3 giờ
B. 1,5 giờ
C. 75 phút
D. 120 phút Đáp án là: B. 1,5 giờ </s> | [
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3060,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Tính nhiệt đới của thiên nhiên nước ta được bảo toàn trên phần lớn diện tích lãnh thổ do địa hình nước ta chủ yếu là
A. đồi núi cao.
B. đồi núi thấp.
C. đồng bằng.
D. cao nguyên. Đáp án là: B. đồi núi thấp. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
325,
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29875,
274,
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298,
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18439,
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347,
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298... | [
1,
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1,
1,
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1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: If only he_____ me a chance, I could have told him the truth.
A. gave
B. has given
C. could give
D. had given Đáp án là: D. had given </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
960,
871,
540,
7652,
29918,
592,
263,
8825,
29892,
306,
1033,
505,
... | [
1,
1,
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1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn từ có trọng âm chính khác với các từ còn lại
A. imagine
B. important
C. example
D. wonderful Đáp án là: D. wonderful </s> | [
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1,
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29871,
30128,
29976,
29886,
29871,
1715,
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865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
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29875,
29901,
14542,
31214,
29876,
5291,
207,
158,
30712,
1302,
30103,
3147,
31214,... | [
1,
1,
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho 18,536g hỗn hợp X gồm Al, Zn, Mg tác dụng với oxi dư thu được 28,168g hỗn hợp 3 oxit. Nếu cho 18,536g hỗn hợp X trên tác dụng với dung dịch HNO3 dư thu được dung dịch Y và sản phẩm khử duy nhất là khí NO. Cô cạn dung dịch Y thu được m gam chất rắn khan. Giá trị của m là
A. 55,86.
B. 93,184.
C. 102,816.
D. 74,522. Đáp án là: A. 55,86. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm nào KHÔNG phải là đặc điểm chung của ngành Chân khớp?
A. Các chân phân đốt khớp động
B. Qua lột xác để tăng trưởng cơ thể
C. Có bộ xương ngoài bằng kitin nâng đỡ, che chở
D. Có mắt kép Đáp án là: D. Có mắt kép </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tam giác ABC có trung tuyến AM = 9cm và G là trọng tâm. Độ dài đoạn AG là
A. 4,5 cm
B. 3 cm
C. 6 cm
D. 4 cm Đáp án là: C. 6 cm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Peter and Tim are discussing their plan for this weekend. Peter: “What about going to the musical show this Sunday?” Tim: “_________”
A. I will arrive a few minutes late.
B. That sounds great.
C. It is ten dollars for a ticket.
D. That’s a good idea, I’m afraid. Đáp án là: B. That sounds great. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là không đúng?
A. Vật dẫn điện là vật có chứa nhiều điện tích tự do.
B. Vật cách điện là vật có chứa rất ít điện tích tự do.
C. Vật dẫn điện là vật có chứa rất ít điện tích tự do.
D. Chất điện môi là chất có chứa rất ít điện tích tự do. Đáp án là: C. Vật dẫn điện là vật có chứa rất ít điện tích tự do. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Con lắc lò xo treo thẳng đứng gồm lò xo nhẹ có độ cứng 100 N/m và vật nhỏ có khối lượng m < 400 g. Giữ vật để lò xo dãn 4,5 cm rồi truyền cho nó tốc độ 40 cm/s, sau đó con lắc dao động điều hòa với cơ năng là 40 mJ. Lấy gia tốc rơi tự do g = 10 m/s 2. Chu kì dao động của vật là?
A. π 5 s
B. π 10 s
C. π 15 s
D. π 20 s Đáp án là: B. π 10 s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: No matter how angry my mother was, she would never ________ to violence.
A. utilize
B. resolve
C. resort
D. resource Đáp án là: C. resort </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Loại “hạt” nào dưới đây thực chất là quả?
A. Hạt sen
B. Hạt lúa
C. Hạt ngô
D. Tất cả các phương án đưa ra Đáp án là: D. Tất cả các phương án đưa ra </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong công nghiệp, nhôm được sản xuất bằng phương pháp
A. điện phân nóng chảy AlCl 3.
B. điện phân nóng chảy Al 2 O 3.
C. dùng CO khử Al 2 O 3 ở nhiệt độ cao.
D. dùng Mg khử Al 3+ trong dung dịch. Đáp án là: B. điện phân nóng chảy Al 2 O 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: một lượng X cần dùng vừa đủ 3,976 lít khí oxi (đktc), thu được 6,38 gam. Mặt khác, X tác dụng với dung dịch NaOH, thu được một muối và hai ancol là đồng đẳng kế tiếp. Công thức phân tử của hai este trong X là Hỗn hợp X gồm 2 este no, đơn chức, mạch hở. đốt cháy hoàn toàn
A. C 2 H 4 O 2 và C 5 H 10 O 2
B. C 2 H 4 O 2 và C 3 H 6 O 2
C. C 3 H 4 O 2 và C 4 H 6 O 2
D. C 3 H 6 O 2 và C 4 H 8 O 2 Đáp án là: B. C 2 H 4 O 2 và C 3 H 6 O 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lượng nước thiếu hụt vào mùa khô ở miền Bắc không nghiêm trọng như ở miền Nam là do
A. mạng lưới sông ngòi dày đặc.
B. được sự điều tiết hợp lí của các hồ nước.
C. nguồn nước ngầm phong phú.
D. có hiện tượng mưa phùn vào cuối mùa đông. Đáp án là: D. có hiện tượng mưa phùn vào cuối mùa đông </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Viết số thập phân 0,25 về dạng phân số ta được
A. 1/4
B. 5/2
C. 2/5
D. 1/5 Đáp án là: A. 1/4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hiking the trail to the peak ______ be dangerous if you are not well prepared for dramatic weather changes.
A. shall
B. should
C. might
D. had better Đáp án là: C. might </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một ống dây điện đặt trong không khí sao cho trục của nó vuông góc với mặt phẳng kinh tuyến từ. Cảm úng từ trái đất có thành phân nằm ngang B d = 2.10 − 5 T. Trong ống dây có treo một kim nam châm. Khi có dòng điện I = 2mA chạy qua dây dẫn thì ta thấy kim nam châm lệch khỏi vị trí ban đầu 45 o. Biết ống dây dài 31,4cm và chỉ cuốn một lớp. Tìm số vòng dây của ống
A. 100 vòng.
B. 2500 vòng
C. 3500 vòng
D. 4000 vòng Đáp án là: B. 2500 vòng </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
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29875,
29901,
4546,
31214,
31500,
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288,
31500,
30103,
865,
1146,
31500,
29891... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Choose the best answer to complete the sentence. I’m an ______ person. I think it is important to tell the truth.
A. kind
B. shy
C. honest
D. honesty Đáp án là: C. honest </s> | [
1,
1,
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278,
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306,
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<s> Chọn đáp án đúng với câu hỏi: Cuộc đấu tranh của nhân dân ta yêu cầu nhà cầm quyền Pháp trả tự do cho nhà yêu nước Phan Bội Châu (1925) do giai cấp nào dưới đây tổ chức và lãnh đạo
A. Nông dân
B. Công nhân
C. Tư sản
D. Tiểu tư sản Đáp án là: D. Tiểu tư sản </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
10406,
29877,
31214,
31500,
29883,
29871,
30128,
29874,
31500,
30103,
... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to indicate the word that differs from the other three in the position of stress in each of the following questions. (Chọn đáp án A, B, C hoặc D để tìm từ có trọng âm khác với ba từ còn lại)
A. aquatic
B. illustrate
C. permanent
D. netiquette Đáp án là: A. aquatic </s> | [
1,
1,
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678,
30975,
29876,
29871,
30128,
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29901,
14542,
852,
278,
5497,
319,
29892,
350,
29892,
315,
470,
360,
304,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Sau cuộc khủng hoảng kinh tế 1929-1933, chủ nghĩa phát xít đã lên năm chính quyền ở những quốc gia nào?
A. Đức, Pháp, Nhật Bản
B. Đức, Tây Ban Nha, Italia
C. Đức, Italia, Nhật Bản
D. Đức, Áo- Hung Đáp án là: C. Đức, Italia, Nhật Bản </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
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29875,
29901,
23863,
2723,
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29883,
413,
6905,
207,
140,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Tính 2/3:7/12:4/18
A. 7/18
B. 9/14
C. 36/7
D. 18/7 Đáp án là: C. 36/7 </s> | [
1,
1,
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29875,
29901,
323,
3642,
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29906,
29914,
29941,
29901,
29955,
29914,
29... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Ở người bị suy thận, phải lọc máu khi nào?
A. Khi vừa mới bị bệnh
B. 5 tháng sau khi mắc bệnh
C. 2 năm sau khi mắc bênh
D. Suy thận giai đoạn cuối Đáp án là: D. Suy thận giai đoạn cuối </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
438,
207,
158,
207,
140,
302,
2543,
207,
158,
29877,
207,
158,
30... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: do/ we/ going/ What/ to/ are/ tonight?
A. What we are going to do tonight?
B. What are we going to do tonight?
C. What do we going are to tonight?
D. What do are we going to do tonight? Đáp án là: B. What are we going to do tonight? </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
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29884,
298,
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190,
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29875,
29901,
437,
29914,
591,
29914,
2675,
29914,
1724,
29914,
304,
29914,
526,
... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Hình ảnh đầu súng trăng treo có ý nghĩa tả thực hay biểu tượng?
A. Tả thực
B. Biểu tượng
C. Vừa tả thực, vừa biểu tượng
D. Cả A, B, C đều sai Đáp án là: C. Vừa tả thực, vừa biểu tượng </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
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274,
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298,
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29875,
29901,
6324,
30712,
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263,
207,
140,
29876,
29882,
29871,
30128,... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: You will take a short (58)_________ in English as soon as you arrive.
A. test
B. exam
C. course
D. lesson Đáp án là: A. test </s> | [
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1,
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887,
674,
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29947,
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<s> Chọn đáp án đúng với câu hỏi: Khi đun nóng rượu etylic với H 2 SO 4 đặc ở 140oC thì sẽ tạo ra
A. C 2 H 4.
B. CH 3 CHO.
C. C 2 H 5 OC 2 H 5.
D. CH 3 COOH. Đáp án là: C. C 2 H 5 OC 2 H 5. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
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1715,
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865,
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476,
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348,
694,
30103,
865,
5796,
207,
158,
2987... | [
1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Xét vị trí tương đối của hai đường thẳng d_1:(x=−1+ty=−2−2t) và d_2:(x=2−2t^'y=−8+4t^').
A. Trùng nhau.
B. Song song.
C. Vuông góc với nhau.
D. Cắt nhau nhưng không vuông góc nhau. Đáp án là: A. Trùng nhau. </s> | [
1,
1,
29871,
678,
30975,
29876,
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30128,
29976,
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1060,
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534,
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260,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 1 mol peptit X mạch hở, thu được N 2, H 2 O và 4 mol CO 2. Số đồng phân cấu tạo của X là :
A. 1.
B. 4.
C. 3
D. 2. Đáp án là: A. 1. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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865,
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30250,
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31500,
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5089,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Làm tròn các số 46, 47, 47, 49 đến hàng chục thì được số....?
A. 40
B. 45
C. 50
D. 55 Đáp án là: C. 50 </s> | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Phép chia nào dưới đây có cùng số dư với phép chia 482 : 4?
A. 331 : 3
B. 420 : 4
C. 562 : 5
D. 363 : 3 Đáp án là: C. 562 : 5 </s> | [
1,
1,
29871,
678,
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1963,
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521,
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270,
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31280,
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 17, cho biết tỉnh nào sau đây có GDP bình quân theo đầu người (năm 2007) thấp nhất ở vùng Đông Nam Bộ?
A. Tây Ninh
B. Bình Phước
C. Bà Rịa -Vũng Tàu
D. Đồng Nai Đáp án là: A. Tây Ninh </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The Internet, too, has had a negative effect on our (3) _________.
A. emotions
B. manners
C. personalities
D. characteristics Đáp án là: B. manners </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to answer these following questions Miss. Mai is a famous singer. She is small and thin. She has long black hair and an oval face. She has brown eyes, a small nose and full lips. She is young and beautiful. Because of her busy work, she often leaves home for work very early and comes back home very late. She is willing to work hard to contribute to her fans all over the world. What does Miss. Mai do?
A. doctor
B. musician
C. nurse
D. singer Đáp án là: D. singer </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy các chất nào sau đây đều làm mất màu dung dịch brom?
A. C H 4 ; C 6 H 6.
B. C 2 H 4 ; C 2 H 6.
C. C H 4 ; C 2 H 4
D. C 2 H 4 ; C 2 H 2. Đáp án là: C. C H 4 ; C 2 H 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Find the word which has a different sound in the part underlined.
A. str ai ght
B. p ai n
C. s ai d
D. afr ai d Đáp án là: C. s ai d </s> | [
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<s> Chọn đáp án đúng với câu hỏi: His wife was possibly the most highly _______ prime minister of this century.
A. educate
B. education
C. educational
D. educated Đáp án là: D. educated </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Theo Đacuyn nguồn nguyên liệu của quá trình tiến hóa là:
A. Biến dị cá thể
B. Biến dị di truyền
C. Biến dị tổ hợp
D. Biến di xuất hiện do tác động trực tiếp của ngoại cảnh Đáp án là: A. Biến dị cá thể </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về tiến hóa nhỏ, phát biểu nào sau đây không đúng?
A. Kết quả của tiến hóa nhỏ sẽ dẫn tới hình thành các nhóm phân loại trên loài.
B. Tiến hóa nhỏ là quá trình biến đổi cấu trúc di truyền của quần thể (biến đổi về tần số alen và thành phần kiểu gen của quần thể) dẫn đến sự hình thành loài mới.
C. Sự biến đổi về tần số alen và thành phần kiểu gen của quần thể đến một lúc làm xuất hiện cách li sinh sản của quần thể đó với quần thể gốc mà nó được sinh ra thì loài mới xuất hiện.
D. Tiến hóa nhỏ là quá trình diễn ra trên quy mô của một quần thể và diễn biến không ngừng dưới tác động của các nhân tố tiến hóa. Đáp án là: A. Kết quả của tiến hóa nhỏ sẽ dẫn tới hình thành các nhóm phân loại trên loài. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: As soon as he arrived at the airport, he called home.
A. No sooner had he arrived at the airport than he called home.
B. He arrived at the airport sooner than he had expected.
C. Calling home, he said that he had arrived at the airport.
D. He arrived at the airport and called me to take him home. Đáp án là: A. No sooner had he arrived at the airport than he called home. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu đúng trong các câu sau:
A. Clorua vôi là muối tạo bởi một kim loại liên kết với một loại gốc axit
B. Clorua vôi là muối tạo bởi một kim loại liên kết với hai loại gốc axit.
C. Clorua vôi là muối tạo bởi hai kim loại liên kết với một loại gốc axit.
D. Clorua vôi không phải là muối Đáp án là: B. Clorua vôi là muối tạo bởi một kim loại liên kết với hai loại gốc axit. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi cho NH 3 vào bình clo, lửa bùng cháy kèm theo "khói" trắng bay ra. "khói" trắng đó là:
A. NH 4 Cl
B. HCl
C. N 2
D. Cl 2 Đáp án là: A. NH 4 Cl </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 8 to 12. Most Americans eat three meals (8)______ the day: breakfast, lunch, and dinner. Breakfast begins between 7:00 and 8:00am, lunch between 11:00 am and noon, and dinner between 6:00 and 8:00 pm. On Sundays "brunch" is a (9)______ of breakfast and lunch, typically beginning at 11:00 am. Students often enjoy a "study break" or evening snack around 10:00 or 11:00 pm. Breakfast and lunch tend to be light meals, with only one (10)______. Dinner is the main meal. (11)_____ breakfast Americans will eat cereal with milk which are often mixed (12)_____ in a bowl, a glass of orange juice, and toasted bread or muffin with jam, butter, or margarine.
A. connection
B. attachment
C. combination
D. addition Đáp án là: C. combination </s> | [
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<s> Chọn đáp án đúng với câu hỏi: No matter how hard Fred tried to start the car, he didn’t succeed.
A. Fried tried very hard to start the car, and succeeded.
B. Fried tried hard to start the car, and with success.
C. However hard he tried, Fried couldn’t start the car.
D. It’s hard for Fried to start the car because he never succeeded. Đáp án là: C. However hard he tried, Fried couldn’t start the car. </s> | [
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678,
30975,
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29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
1939,
4383,
920,
2898,
12001,
1898,
304,
1369,
278,
1559,
29892,
54... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Viết 5/100 dưới dạng số thập phân được:
A. 5,100
B. 0,05
C. 0,50
D. 0,500 Đáp án là: B. 0,05 </s> | [
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270,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đối với vi khuẩn, tốc độ tiến hoá diễn ra một cách nhanh chóng vì
A. Vi khuẩn có ít gen nên tỷ lệ gen đột biến cao
B. Vi khuẩn sinh sản nhanh và gen đột biến được biểu hiện ngay thành kiểu hình
C. Vi khuẩn có kích thước nhỏ, tốc độ trao đổi chất mạnh nên dễ chịu ảnh hưởng của môi trường
D. Quần thể vi khuẩn có kích thước nhỏ nên dễ chịu sự tác động của các nhân tố tiến hoá Đáp án là: B. Vi khuẩn sinh sản nhanh và gen đột biến được biểu hiện ngay thành kiểu hình </s> | [
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1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: His achievements were partly due to the ____ of his wife.
A. assistance
B. assisted
C. assist
D. assistant Đáp án là: A. assistance </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: “Ôi sáng xuân nay, Xuân 41 Trắng rừng biên giới nở hoa mơ Bác về, im lặng, con chim hót Thánh thót bờ lau vui ngẩn ngơ...” Theo anh(chị), những câu thơ trên đã nhắc đến sự kiện lịch sử nào ở Việt Nam?
A. Hội nghị Ban chấp hành Trung ương Đảng tháng 5-1941
B. Nguyễn Ái Quốc trở về Việt Nam
C. Nguyễn Ái Quốc bị bắt ở Quảng Tây
D. Nguyễn Ái Quốc được trả tự do Đáp án là: B. Nguyễn Ái Quốc trở về Việt Nam </s> | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Nervousness and anxiety are perfectly (5) ______ reactions to stress.
A. habitual
B. customary
C. conventional
D. normal Đáp án là: D. normal </s> | [
1,
1,
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405,
6972,
681,
2264,
322,
14919,
21549,
526,
7970,
313,
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298... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một sợi dây thép dài 6m nặng 75g. Để bán 100m dây thép thì người ta cần phải cân cho khach hàng bao nhiêu gam?
A. 1000gam
B. 1520gam
C. 1225gam
D.1250gam Đáp án là: D.1250gam </s> | [
1,
1,
29871,
678,
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29871,
30128,
29976,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Lục địa Ô-xtrây-li-a chiếm bao nhiêu phần trăm diện tích của châu Đại Dương? (biết diện tích lục địa Ô-xtrây-li-a là 7,7 triệu km 2, châu Đại Dương 8,5 triệu km 2 )
A. 89,4%
B. 67,8%
C. 94,6%
D. 75,8% Đáp án là: A. 89,4% </s> | [
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1,
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438,
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29... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một cấp số cộng có 8 số hạng. Số hạng đầu là 5, số hạng thứ tám là 40. Khi đó công sai d của cấp số cộng đó là bao nhiêu?
A. d = 4
B. d = 5
C. d = 6
D. d = 7 Đáp án là: B. d = 5 </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Nhận định nào không phải nguyên nhân của các trường hợp không tuân thủ phương châm hội thoại?
A. Người nói vô ý, vụng về, thiếu văn hóa giao tiếp.
B. Người nói phải ưu tiên một phương châm hội thoại, hoặc một yêu cầu khác cao hơn.
C. Người nói muốn gây một sự chú ý để người nghe hiểu câu nói đó theo một hàm ý nào đó.
D. Người nói nắm được các đặc điểm của tình huống giao tiếp. Đáp án là: C. Người nói muốn gây một sự chú ý để người nghe hiểu câu nói đó theo một hàm ý nào đó. </s> | [
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1,
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29... | [
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