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<s> Chọn đáp án đúng với câu hỏi: This passage would probably be read in which of the following academic courses?
A. International affairs
B. Current events
C. American literature
D. European history Đáp án là: C. American literature </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tính chất nào không phải của Toluen?
A. Tác dụng với Br 2 (t°, Fe)
B. Tác dụng với Cl 2 (as)
C. Tác dụng với dung dịch KMnO 4, t°
D. Tác dụng với dung dịch Br 2. Đáp án là: D. Tác dụng với dung dịch Br 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trộn dung dịch chứa a mol AlCl 3 với dung dịch chứa b mol KOH. Để thu được kết tủa thì cần có tỉ lệ
A. a : b = 1 : 4
B. a : b < 1 : 4
C. a : b = 1 : 5
D. a : b > 1 : 4 Đáp án là: D. a : b > 1 : 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các mệnh đề sau, mệnh đề nàođúng:
A. Có một phép tịnh tiến theo vectơ khác0→ biến mọiđiểm thành chính nó
B. Có một phép đối xứng trục biến mọiđiểm thành chính nó
C. Có một phép đối xứng tâm biến mọiđiểm thành chính nó
D. Có phép quay biến mọi điểm thành chính nó Đáp án là: D. Có phép quay biến mọi điểm thành chính nó </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho mạch điện như hình sau: Biết các cường độ dòng điện I 1 = 0,5A; I 2 = 1A. Cường độ dòng điện I =?
A. 0,5A
B. 1,5A
C. 1A
D. 2A Đáp án là: B. 1,5A </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hai nguyên tố X, Y (Z X < Z Y ) nằm kế tiếp nhau trong cùng một nhóm A và có tổng số proton trong hạt nhân là 30. Hai nguyên tố X, Y là
A. Li và Na.
B. Na và K.
C. Mg và Ca.
D. F và Cl. Đáp án là: B. Na và K. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các hợp chất sau : 1) CH 3 -CH(NH 2 )-COOH 2) HO-CH 2 -COOH 3) CH 2 O và C 6 H 5 OH 4) C 2 H 4 (OH) 2 và p-C 6 H 4 (COOH) 2 5) (CH 2 ) 5 (NH 2 ) 2 và (CH 2 ) 4 (COOH) 2 Các trường hợp nào sau đây có khả năng tham gia phản ứng trùng ngưng?
A. 3,5
B. 1,2,3,4,5
C. 1,2
D. 3,4 Đáp án là: B. 1,2,3,4,5 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong thí nghiệm giao thoa I âng khoảng cách hai khe là 5 mm khoảng cách giữa mặt phẳng chứa hai khe và màn ảnh 2 m. Giao thoa với ánh sáng đơn sắc màu vàng có bước sóng 0,58 μm. Tìm vị trí vân sáng bậc 3 trên màn ảnh:
A. ± 0,696 mm.
B. ± 0,812 mm.
C. 0,696 mm.
D. 0,812 mm Đáp án là: D. 0,812 mm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm một căn bậc hai của −5.
A. i√(5)
B. i√(-5)
C. √(5)i
D. -√(5)i Đáp án là: A. i√(5) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quốc tế thứ hai tồn tại trong khoảng thời gian
A. từ năm 1889 đến 1895
B. từ năm 1889 đến 1918
C. từ năm 1889 đến 1914
D. t ừ năm 1889 đến 1919 Đáp án là: C. từ năm 1889 đến 1914 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The Minister said: “I didn’t do anything improper”.
A. The Minister denied doing anything improper.
B. The Minister denied that he would do anything improper.
C. The Minister refused to have done anything improper.
D. The Minister refused to do anything improper. Đáp án là: A. The Minister denied doing anything improper. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là đúng?
A. Xenlulozơ thuộc loại đisaccarit.
B. Trùng ngưng vinyl clorua thu được poli(vinyl clorua).
C. Amino axit thuộc loại hợp chất hữu cơ đa chức.
D. Thủy phân hoàn toàn chất béo luôn thu được glixerol. Đáp án là: D. Thủy phân hoàn toàn chất béo luôn thu được glixerol </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép chia 18 000 : 100 là:
A. 18
B. 180
C. 1800
D. 108 Đáp án là: B. 180 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở phần đầu bài thơ “Vội vàng” của Xuân Diệu, nhân vật trữ tình xưng "tôi", phần cuối bài thơ lại xưng "ta". Việc thay đổi cách xưng gọi như vậy, chủ yếu nhằm dụng ý gì?
A. Nhân vật trữ tình muốn nhân danh cả một lớp người trẻ trung để có thêm sự tiếp sức.
B. Nhân vật trữ tình muốn tự nâng mình lên một tầm vóc lớn lao hơn để có thể chạy đua với thời gian và ôm riết tất cả.
C. Nhân vật trữ tình muốn nhấn mạnh sự bé nhỏ, hữu hạn của "cái tôi" cá nhân trước thời gian, cuộc đời.
D. Nhân vật trữ tình muốn tạo ra một giọng nói đầy quyền uy trước thời gian, cuộc đời. Đáp án là: B. Nhân vật trữ tình muốn tự nâng mình lên một tầm vóc lớn lao hơn để có thể chạy đua với thời gian và ôm riết tất cả. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một ống dây có dòng điện chạy qua tạo ra trong ống dây một từ trường đều B= 6.10 -3 T. Ống dây dài 0,4m có 800 vòng dây quấn sát nhau. Cường độ dòng điện chạy trong ống dây là:
A. I = 2,38A
B. I = 5,97A
C. I = 14,9A
D. I = 23,9A Đáp án là: A. I = 2,38A </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The incredible thing about telephone _______ across the continents, but that you can recognize the other person's voice.
A. is it provides instant talking to each other.
B. is it allows people to talk instantly
C. is not that people can instantly talk to each other
D. is that people can talk instantly Đáp án là: A. is it provides instant talking to each other. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho lượng dư dung dịch AgNO 3 tác dụng với 2 00 ml dung dịch NaF 0, 1 M và NaCl 0, 2 M. Khối lượng kết tủa tạo thành là:
A. 5,7 4 gam;
B. 6,69 gam;
C. 8,28 gam;
D. 1 3,3 8 gam. Đáp án là: A. 5,7 4 gam; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A = 16.5^8 + 32 chia hết cho những số nào trong các số 2; 4; 8; 13; 16?
A. A chia hết cho 2, cho 4, cho 8, cho 16;
B. A chia hết cho 2, cho 4, cho 13;
C. A chia hết cho 2, cho 8, cho 13, cho 16;
D. A chia hết cho 2, cho 6, cho 8. Đáp án là: A. A chia hết cho 2, cho 4, cho 8, cho 16; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dòng điện Foucault không xuất hiện trong trường hợp nào sau đây?
A. Khối đồng chuyển động trong từ trường đều cắt các đường sức từ;
B. Lá nhôm dao động trong từ trường;
C. Khối thủy ngân nằm trong từ trường biến thiên;
D. Khối lưu huỳnh nằm trong từ trường biến thiên. Đáp án là: D. Khối lưu huỳnh nằm trong từ trường biến thiên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phần trắc nghiệm Nọi dung câu hỏi 1 Có bao nhiêu ví dụ sau đây là cách li trước hợp tử? (1). Hai loài rắn sọc sống trong cùng khu vực địa lí, một loài chủ yếu sống dưới nước, loài kia sống trên cạn. (2). Một số loài kì giông sống trong một khu vực có giao phối với nhau nhưng con lai không phát triển. (3). Ngựa vằn sống ở châu Phi không giao phối với ngựa hoang sống ở vùng Trung Á. (4). Hai dòng lúa tích lũy các alen đột biến lặn ở một số locut khác nhau, hai dòng vẫn phát triển bình thường, hữu thụ nhưng cây lai giữa hai dòng có kích thước rất nhỏ và cho hạt lép. (5). Sự không tương thích của các phân tử prôtêin trên bề mặt trứng và tinh trùng của hai loài nhím biển nên không thể kết hợp được với nhau.
A. 2
B. 3
C. 4
D. 1 Đáp án là: B. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tam giác ABC có BC=2√(3), AC=2AB và độ dài đường cao AH = 2. Tính độ dài cạnh AB.
A. AB = 2;
B. AB=(2√(3))/3;
C. AB = 2 hoặc AB=(2√(21))/3;
D. AB = 2 hoặc AB=(2√(3))/3. Đáp án là: C. AB = 2 hoặc AB=(2√(21))/3; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: What __________ you __________ two days ago?
A. do – do
B. did – did
C. do – did
D. did – do Đáp án là: D. did – do </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chất nào là amin bậc 3:
A. (CH 3 ) 3 C-NH 2.
B. (CH 3 ) 3 N.
C. (NH 2 ) 3 C 6 H 3.
D. CH 3 NH 3 Cl. Đáp án là: B. (CH 3 ) 3 N. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bản đồ thể hiện các đối tượng địa lí có độ chi tiết cao, có độ chính xác và đầy đủ nhất là
A. bản đồ có tỉ lệ 1: 50.000.
B. bản đồ có tỉ lệ 1: 150.000.
C. bản đồ có tỉ lệ 1: 250.000.
D. bản đồ có tỉ lệ 1: 5.000.000. Đáp án là: A. bản đồ có tỉ lệ 1: 50.000. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các tổ chức tài chính quốc tế nào sau đây ngày càng đóng vai trò quan trọng trong sự phát triển kinh tế toàn cầu?
A. Ngân hàng châu Âu, Quỹ tiền tệ quốc tế.
B. Ngân hàng châu Á, Ngân hàng châu Âu.
C. Ngân hàng Thế giới, Quỹ tiền tệ quốc tế.
D. Ngân hàng châu Á, Ngân hàng Thế giới. Đáp án là: C. Ngân hàng Thế giới, Quỹ tiền tệ quốc tế. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở người, dịch tiêu hoá từ tuyến tuỵ sẽ đổ vào bộ phận nào
A. Thực quản
B. Ruột già
C. Dạ dày
D. Ruột non Đáp án là: D. Ruột non </s> | [
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29901,
438,
207,
158,
207,
140,
302,
2543,
207,
158,
29877,
207,
158,
30... | [
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<s> Chọn đáp án đúng với câu hỏi: Hoà tan a gam Fe vào dung dịch HCl thu được 2,24 lít khí (ở đktc) và dung dịch D. Cô cạn dung dịch D thu được m gam muối khan. Cho khối lượng muối trên vào 100ml dung dịch KMnO 4 0,25M trong H 2 SO 4, sau phản ứng hoàn toàn thu V lít khí (ở đktc). Giá trị V là :
A. 2,24
B. 0,28
C. 1,4
D. 0,336 Đáp án là: B. 0,28 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: So sánh giữa thực vật thụ phấn nhờ sâu bọ và thực vật thụ phấn nhờ gió, người ta thấy thực vật thụ phấn nhờ gió có đặc điểm
A. hoa có màu rực rỡ và sáng hơn
B. có nhiều tuyến mật.
C. có ít giao tử đực hơn
D. hạt phấn nhỏ, nhẹ, nhiều hơn. Đáp án là: D. hạt phấn nhỏ, nhẹ, nhiều hơn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhân vật chính trong tác phẩm văn học là:
A. Nhân vật xuất hiện từ đầu đến cuối tác phẩm.
B. Nhân vật mà nhà văn yêu mến.
C. Nhân vật giữ vị trí trung tâm trong việc thể hiện chủ đề và tư tưởng của tác phẩm.
D. Nhân vật có uy tín, vị trí và ảnh hưởng đến tất cả các nhân vật khác trong câu chuyện. Đáp án là: C. Nhân vật giữ vị trí trung tâm trong việc thể hiện chủ đề và tư tưởng của tác phẩm. </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. volunt ee r
B. committ ee
C. guarant ee
D. degr ee Đáp án là: A. volunt ee r </s> | [
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<s> Chọn đáp án đúng với câu hỏi: It is ________ to fail a job interview, but try again.
A. disappoint
B. disappointing
C. disappointedly
D. disappointment Đáp án là: B. disappointing </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A. carpet B. school C. facial D. contact
A. carpet
B. school
C. facial
D. contact Đáp án là: C. facial </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mặt phẳng tọa độ Oxy, cho bốn điểm A (7; −3), B (8; 4), C(1;5) và D (0; −2). Khẳng định nào sau đây đúng?
A. AC→⊥CB→
B. Tam giác ABC đều
C. Tứ giác ABCD là hình vuông
D. Tứ giác ABCD không nội tiếp đường tròn Đáp án là: C. Tứ giác ABCD là hình vuông </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một sợi dây căng giữa 2 điểm cố định cách nhau 60 cm. Hai sóng có tần số gần nhau liên tiếp cùng tạo ra sóng dừng trên dây là 84 Hz và 98 Hz. Biết tốc độ truyền của các sóng trên dây là bằng nhau. Tốc độ truyền sóng trên dây là
A. 1,44 m/s
B. 1,68 m/s
C. 16,8 m/s
D. 14,4 m/s Đáp án là: C. 16,8 m/s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Polime nào sau đây thuộc loại polime thiên nhiên?
A. Polietilen.
B. Poli(vinyl clorua)
C. Polibutađien.
D. Xenlulozơ. Đáp án là: D. Xenlulozơ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhóm đất phổ biến ở Việt Nam là:
A. Đất feralit
B. Đất potdon
C. Đất đen
D. Đất mùn Đáp án là: A. Đất feralit </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số đối của \[ - \left( { - \frac{2}{{27}}} \right)\] là:
A. \[\frac{{27}}{2}\]
B. \[ - \left( { - \frac{2}{{27}}} \right)\]
C. \[\frac{2}{{27}}\]
D. \[\frac{2}{{27}}\] Đáp án là: D. \[\frac{2}{{27}}\] </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho m gAm Al phản ứng hoàn toàn với dung dịch HNO 3 loãng (dư), thu được 4,48 lít khí NO (đktc, sản phẩm khử duy nhất). Giá trị củA m là
A. 4,05.
B. 2,70.
C. 8,10
D. 5,40. Đáp án là: D. 5,40 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự sắp xếp dân số một cách tự phát hoặc tự giác trên một lãnh thổ nhất định, phù hợp với điều kiện sống và các yêu cầu xã hội được gọi là
A. đô thị.
B. sự phân bố dân cư.
C. lãnh thổ.
D. cơ cấu dân số. Đáp án là: B. sự phân bố dân cư. </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... |
<s> Chọn đáp án đúng với câu hỏi: Air pollution poses a____________to both human health and our environmen.
A. jeopardy
B. difficulty
C. problem
D. threat Đáp án là: D. threat </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “Trong một đường tròn, đường kính đi qua trung điểm của một dây không đi qua tâm thì...với dây ấy”. Điền vào dấu...cụm từ thích hợp
A. nhỏ hơn
B. bằng
C. song song
D. vuông góc Đáp án là: D. vuông góc </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một đoàn tàu chuyển động trong thời gian 1,5h đi đoạn đường dài 8100m. Vận tốc của tàu là:
A. 40m/s
B. 8m/s
C. 15m/s
D. 120m/s Đáp án là: C. 15m/s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word that has main stress placed differently from the others:
A. loyalty
B. success
C. incapable
D. sincere Đáp án là: A. loyalty </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm chung của dầu, mỡ, photpholipit, streoit là
A. Chúng đều có nguồn nguyên liệu dự trữ năng lượng cho tế bào
B. Đều tham gia cấu tạo nên màng tế bào
C. Đều có ái lực yếu hoặc không có ái lực với nước
D. Cả A, B, C Đáp án là: C. Đều có ái lực yếu hoặc không có ái lực với nước </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nghề cá là nghề trọng điểm của tỉnh nào ở khu vực Bắc Trung Bộ?
A. Quảng Bình.
B. Thanh Hóa.
C. Hà Tĩnh.
D. Nghệ An. Đáp án là: D. Nghệ An </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ví dụ nào sau đây phản ánh mối quan hệ hội sinh:
A. Chim sáo đậu trên lưng con trâu rừng
B. Vi khuẩn lam sống trong nốt sần rễ cây họ đậu
C. Cây tầm gửi sống trên thân cây gỗ.
D. Cây phong lan bám trên thân cây gỗ Đáp án là: A. Chim sáo đậu trên lưng con trâu rừng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mạch dao động LC lí tưởng, điện dung của tụ là 0,1 π 2 ( p F ). Nối hai cực của nguồn điện một chiều có suất điện động E và điện trở trong 1 Ω vào hai đầu cuộn cảm. Sau khi dòng điện trong mạch ổn định, cắt nguồn thì mạch LC dao động với năng lượng 4,5 mJ. Khoảng thời gian ngắn nhất từ lúc năng lượng điện trường cực đại đến lúc năng lượng từ trường cực đại là 5 ns. Tính E
A. 0,2 (V)
B. 3 (V)
C. 5 (V)
D. 2 (V) Đáp án là: B. 3 (V) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word whose underlined part is pronounced differently from the rest.
A. love s
B. describe s
C. ask s
D. feel s Đáp án là: C. ask s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quả trâm bầu phát tán chủ yếu theo hình thức nào?
A. Phát tán nhờ nước
B. Phát tán nhờ gió
C. Phát tán nhờ động vật
D. Tự phát tán Đáp án là: B. Phát tán nhờ gió </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X gồm 0,1 mol C 2 H 2 ; 0,15 mol C 2 H 4 ; 0,2 mol C 2 H 6 và 0,3 mol H 2. Đun nóng X với bột Ni xúc tác 1 thời gian được hỗn hợp Y. Đốt cháy hoàn toàn hỗn hợp Y được số gam CO 2 và H 2 O lần lượt là
A. 39,6 và 23,4
B. 3,96 và 3,35
C. 39,6 và 46,8
D. 39,6 và 11,6 Đáp án là: A. 39,6 và 23,4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm m ≠ 2 để hệ phương trình (m^2x+4my=1x−2y=1/(2−m))có vô số nghiệm
A. m = 0; m = −2
B. m = −2
C. m = 0
D. Không có giá trị m Đáp án là: B. m = −2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho dãy số: 2; 12; 22,...,...; 52; 62. Hai số điền vào chỗ trống trong dãy là:
A. 32:33
B. 32; 42
C. 42; 52
D. 22; 32 Đáp án là: B. 32; 42 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân sinh ra chuyển động biểu kiến hàng năm của Mặt Trời là do
A. Vận tốc chuyển động của Trái Đất quanh Mặt Trời luôn luôn thay đổi.
B. Trái Đất có dạng hình cầu và nghiêng một góc không đổi bằng 66°33’.
C. Trái Đất chuyển động quanh Mặt Trời với trục nghiêng không đổi.
D. Trái Đất chuyển động tự quay quanh trục theo hướng từ tây sang đông. Đáp án là: C. Trái Đất chuyển động quanh Mặt Trời với trục nghiêng không đổi. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vai trò chủ yếu của enzym ADN polimeraza trong quá trình tự sao của ADN là:
A. Mở xoắn NST và ADN
B. Liên kết nucleotit của môi trường với nucleotit của mạch khuôn theo NTBS
C. Tổng hợp đoạn mồi trên mạch có chiều 5' đến 3'
D. Phá vỡ liên kết H 2 để ADN thực hiện tự sao Đáp án là: B. Liên kết nucleotit của môi trường với nucleotit của mạch khuôn theo NTBS </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về mức phản ứng của kiểu gen, phát biểu nào sau đây là đúng?
A. Có thể xác định mức phản ứng của một kiểu gen dị hợp ở một loài thực vật sinh sản hữu tính bằng cách gieo các hạt của cây này trong các môi trường khác nhau rồi theo dõi các đặc điểm của chúng.
B. Các cá thể của một loài có kiểu gen khác nhau, khi sống trong cùng một môi trường thì có mức phản ứng giống nhau.
C. Tập hợp các kiểu hình của cùng một kiểu gen tương ứng với các môi trường khác nhau được gọi là mức phản ứng của kiểu gen.
D. Mức phản ứng của một kiểu gen là tập hợp các phản ứng của một cơ thể khi điều kiện môi trường biến đổi. Đáp án là: C. Tập hợp các kiểu hình của cùng một kiểu gen tương ứng với các môi trường khác nhau được gọi là mức phản ứng của kiểu gen. </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 word that differs from the other three in the position of primary stress in each of the following question.
A. machine
B. expert
C. fiction
D. office Đáp án là: A. machine </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hai vật m 1 và m 2 được nối với nhau bằng một sợi chỉ, và chúng được treo bởi một lò xo có độ cứng k (lò xo nối với m 1 ). Khi hai vật đang ở vị trí cân bằng người ta đốt đứt sợi chỉ sao cho vật m 2 rơi xuống thì vật m 1 sẽ dao động điều hòa với biên độ
A. m 2 g k
B. ( m 1 + m 2 ) g k
C. m 1 g k
D. m 1 - m 2 g k Đáp án là: A. m 2 g k </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I am very fond of _______.
A. cooking
B. cook
C. cooks
D. to cook Đáp án là: A. cooking </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc đơn dao động điều hoà với chu kì là 2 s tại một nơi có gia tốc trọng trường là g = π 2 ( m / s 2 ). Chiều dài của con lắc là:
A. 2m
B. 1m
C. 1,5m
D. 1,8m Đáp án là: B. 1m </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu ancol thơm, công thức C 8 H 10 O khi tác dụng với CuO đun nóng cho ra anđehit?
A. 2
B. 3
C. 4
D. 5 Đáp án là: C. 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: They would like to live in a country _________ there is a lot of sunshine.
A. which
B. where
C. that
D. when Đáp án là: B. where </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số thích hợp để điền vào chỗ trống sin (– 135°) =... là
A. (√(2))/2;
B. -(√(2))/2;
C. 1/2;
D. -1/3. Đáp án là: B. -(√(2))/2; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: It can be inferred that a New York apartment building in the 1870’s and 1880’s had all of the following characteristics EXCEPT:
A. Its room arrangement was not logical.
B. It was rectangular
C. It was spacious inside.
D. It had limited light. Đáp án là: C. It was spacious inside. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm điều kiện của m để bất phương trình 9^x-(m+1).3^x+m<0 có nghiệm
A. m>0
B. 0<m≠1
C. m<1
D. m≠1 Đáp án là: D. m≠1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trường hợp nào sau đây xảy ra ăn mòn điện hóa?
A. Sợi dây đồng nhúng trong dung dịch HNO 3.
B. Đốt dây sắt trong khí oxi khô.
C. Đinh sắt nhúng trong dung dịch CuSO 4.
D. Cho lá đồng vào dung dịch Fe(NO 3 ) 3. Đáp án là: A. Sợi dây đồng nhúng trong dung dịch HNO 3. </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn một este đơn chức, mạch hở X (phân tử có số liên kết p nhỏ hơn 3), thu được thể tích khí CO 2 bằng 5/6 thể tích khí O 2 đã phản ứng (các thể tích khí đo ở cùng điều kiện). Cho m gam X tác dụng hoàn toàn với 200 ml dung dịch NaOH 1M thu được dung dịch Y. Cô cạn Y thu được 14,3 gam chất rắn khan. Giá trị của m là
A. 3,5
B. 7,5
C. 15
D. 18 Đáp án là: C. 15 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: My father has a/ an _________hobby: carving eggshells.
A. horrible
B. unusual
C. bad
D. boring Đáp án là: B. unusual </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các dãy số sau, dãy nào là cấp số nhân?
A. u_n=1/(3^n+1)
B. u_n=−1/(3n−^2)
C. u_n=1/3−2n
D. u_n=n^3+1 Đáp án là: B. u_n=−1/(3n−^2) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch chất nào sau đây không làm quỳ tím đổi màu?
A. HOOCC 3 H 5 (NH 2 )COOH
B. CH 3 CH 2 NH 2
C. H 2 NCH 2 COOH
D. CH 3 COOH Đáp án là: C. H 2 NCH 2 COOH </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Để gây hiện tượng co nguyên sinh, người ta cho tế bào vào trong môi trường
A. có chứa hàm lượng đường thấp hơn so với tế bào.
B. có chứa hàm lượng muối NaCl thấp hơn so với tế bào.
C. có chứa hàm lượng chất tan cao hơn so với tế bào.
D. có chứa hàm lượng nước cao hơn so với tế bào. Đáp án là: C. có chứa hàm lượng chất tan cao hơn so với tế bào. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng khi nói về dân số nước ta?
A. Dân số nước ta tăng nhanh
B. Việt Nam là một nước đông dân
C. Phần lớn dân số ở thành thị
D. Cơ cấu dân số chuyển sang già Đáp án là: C. Phần lớn dân số ở thành thị </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật khối lượng 5 kg được ném thẳng đứng hướng xuống với vận tốc ban đầu 2 m/s từ độ cao 30 m. Vật này rơi chạm đất sau 3s sau khi ném. Cho biết lực cản không khí tác dụng vào vật không đổi trong quá trình chuyển động. Lấy g = 10 m / s 2. Lực cản của không khí tác dụng vào vật có độ lớn bằng
A. 23,35 N
B. 20 N
C. 73,34 N
D. 62,5 N Đáp án là: A. 23,35 N </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lựa chọn đáp án đúng nhất:Tìm số tự nhiên x biết x là số có tận cùng là chữ số 0 và 1320 < x < 1339
A. x là: 1330
B. x là: 1332
C. x là: 1335
D. x là: 1338 Đáp án là: A. x là: 1330 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các môi trường sau, môi trường nào không thể truyền được âm: Nước sôi, tấm nhựa, chân không, cao su?
A. Tấm nhựa
B. Chân không
C. Nước sôi
D. Cao su Đáp án là: B. Chân không </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Người ta thiết kế 1 cái tháp gồm 11 tầng. Diện tích bề mặt của mỗi tầng bằng nửa diện tích của bề mặt của tầng ngay bên dưới và diện tích của bề mặt tầng một bằng nửa diện tích của đế tháp. Biết diện tích của đế tháp là 12288 m^2. Diện tích bề mặt của tầng trên cùng là:
A. 24m^2
B. 12m^2
C. 6m^2
D. 3m^2 Đáp án là: C. 6m^2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số nghiệm của phương trình sinx + cosx = 1 trên khoảng (0;π) là
A. 0
B. 1
C. 2
D. 3 Đáp án là: B. 1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word whose underlined part is pronounced differently:
A. plea s ure
B. lei s ure
C. s ure
D. mu s ic Đáp án là: C. s ure </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một lớp học có 35 học sinh, trong đó có 5/7 là học sinh nam. Hỏi lớp đó có bao nhiêu học sinh nữ?
A. 11
B. 24
C. 10
D. 25 Đáp án là: C. 10 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu biện pháp sau đây góp phần bảo vệ đa dạng sinh học? I. Tích cực sử dụng các nguồn năng lượng tái tạo. II. Tăng cường sử dụng các phương tiện giao thông công cộng. III. Bảo vệ rừng, tích cực chống xói mòn đất. IV. Tăng cường khai thác các nguồn dầu mỏ, khí đốt để phát triển kinh tế
A. 1
B. 2
C. 3
D. 4. Đáp án là: C. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: It seems that he isn’t the right person for the job, ________?
A. doesn’t it
B. is he
C. isn’t he
D. does it Đáp án là: B. is he </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số thích hợp điền vào chỗ chấm (...)/9=4/36 là
A. 1
B. 4
C. 9
D. 36 Đáp án là: A. 1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm nổi bật của cuộc khủng hoảng kinh tế (1929 - 1933) là gì?
A. Là cuộc khủng hoảng thiếu, kéo dài nhất trong lịch sử các nước tư bản.
B. Là cuộc khủng hoảng thừa, để lại nhiều hậu quả nghiêm trọng.
C. Là cuộc khủng hoảng thiếu, có quy mô lớn nhất trong lịch sử các nước tư bản.
D. Là cuộc khủng hoảng kinh tế thế giới đầu tiên, để lại hậu quả nặng nề cho các nước tư bản. Đáp án là: B. Là cuộc khủng hoảng thừa, để lại nhiều hậu quả nghiêm trọng. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong chỉ thị "Nhật - Pháp bắn nhau và hành động của chúng ta", Đảng Cộng sản Đông Dương đã đưa ra khẩu hiệu gì?
A. "Đánh đuổi Pháp - Nhật".
B. "Đánh đuổi phát xít Nhật".
C. "Đánh đuổi đế quốc Pháp".
D. "Đánh đuổi bọn đế quốc, Việt gian". Đáp án là: B. "Đánh đuổi phát xít Nhật". </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhúng 1 thanh nhôm nặng 45 gam vào 400 mL dung dịch CuS O 4 0,5M. Sau một thời gian lấy thanh nhôm ra cân nặng 46,38 gam. Khối lượng Cu thoát ra là
A. 0,64 g.
B. 1,28 g.
C. 1,92 g.
D. 2,56g. Đáp án là: A. 0,64 g. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word, phrase or expression that best completes each sentence (3.0 points). 1. _________ month is the Hoa Ban festival of the Thai people held in?
A. When
B. Which
C. How many
D. How often Đáp án là: B. Which </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Liên bang Nga đóng vai trò như thế nào trong Liên Bang Xô Viết?
A. Tạo dựng Liên Xô trở thành cường quốc trên thế giới.
B. Mở rộng lãnh thổ Liên Xô, là nước có diện tích lớn nhất.
C. Đưa Liên Xô trở thành cường quốc xuất khẩu dầu mỏ.
D. Thúc đẩy tăng trưởng kinh tế Liên Xô đứng đầu thế giới. Đáp án là: A. Tạo dựng Liên Xô trở thành cường quốc trên thế giới. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phép toán 45 849 : 9 có số dư là:
A. 2
B. 3
C. 4
D. 5 Đáp án là: B. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ancol etylic không phản ứng với chất nào sau đây?
A. CuO/t°.
B. Na
C. HCOOH
D. NaOH Đáp án là: D. NaOH </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một đoạn mạch có điện trở R, dòng điện trong mạch có cường độ I. Trong thời gian t, nhiệt lượng tỏa ra trên đoạn mạch là Q. Biểu thức liên hệ các đại lượng là
A. Q = IRt 2
B. Q = IR 2 t
C. Q = IRt
D. Q = I 2 Rt Đáp án là: D. Q = I 2 Rt </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Anilin (C 6 H 5 NH 2 ) tạo kết tủa trắng khi cho vào
A. dung dịch NaOH
B. dung dịch HCl
C. dung dịch nước brom
D. dung dịch NaCl Đáp án là: C. dung dịch nước brom </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 0,5 mol hỗn hợp X gồm một aminoaxit Y có một nhóm amino và một axit cacboxylic no, đơn chức, mạch hở Z thu được 26,88 lít CO 2 (đktc), 23,4 gam H 2 O và N 2. Mặt khác, 0,45 mol X phản ứng vừa đủ với dung dịch chứa m gam HCl. Giá trị của m là
A. 10,95
B. 4,38
C. 6,57
D. 6,39 Đáp án là: C. 6,57 </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Khi nói về đột biến cấu trúc NST, có bao nhiêu phát biểu sau đây đúng? I. Mất một đoạn NST mà đoạn bị mất không mang gen quy định tính trạng thì đột biến đó không gây hại. II. Mất một đoạn NST có độ dài bằng nhau thì số lượng gen bị mất sẽ như nhau. III. Mất một đoạn NST mà đoạn bị mất đều có 5 gen thì độ dài của đoạn bị mất sẽ bằng nhau. IV. Các đột biến mất đoạn NST ở các vị trí khác nhau biểu hiện kiểu hình khác nhau.
A. 2
B. 3
C. 1
D. 4 Đáp án là: C. 1 </s> | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các chất: C 6 H 5 CH 3 (1); p -CH 3 C 6 H 4 C 2 H 4 (2); C 6 H 5 C 2 H 3 (3); o -CH 3 C 6 H 4 CH 3 (4). Dãy gồm các chất là đồng đẳng của benzen là
A. (2), (3) và (4)
B. (1), (3) và (4)
C. (1), (2) và (3)
D. (1), (2) và (4) Đáp án là: D. (1), (2) và (4) </s> | [
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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: Mr.Merlin, that dies at the end of the film Kingsman, is really good at computing and technology.
A. computing
B. is
C. at
D. that Đáp án là: D. that </s> | [
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472,
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1095,
310,
27... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Công nghiệp silicat là ngành công nghiệp chế biến các hợp chất của silic. Ngành sản xuất nào sau đây không thuộc về công nghiệp silicat?
A. Sản xuất đồ gốm (gạch, ngói, sành, sứ)
B. Sản xuất xi măng
C. Sản xuất thủy tinh
D. Sản xuất thủy tinh hữu cơ Đáp án là: D. Sản xuất thủy tinh hữu cơ </s> | [
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3189,
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347,
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31500,
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4047,
293,
... | [
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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: Phương trình 2f^(x)=3g^(x) tương đương với phương trình nào dưới đây?
A. f(x)=g(x).log_32
B. (f(x))/(ln3)=(g(x))/(ln2)
C. f(x)=(3/2)g^(x)
D. 3-f^(x)=2-g^(x) Đáp án là: B. (f(x))/(ln3)=(g(x))/(ln2) </s> | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Thực hiện kế hoạch Na-va,Pháp tăng thêm ở Đông Dương bao nhiêu tiểu đoàn bộ binh?
A. 10 tiểu đoàn bộ binh.
B. 11 tiểu đoàn bộ binh.
C. 12 tiểu đoàn bộ binh.
D. 13 tiểu đoàn bộ binh. Đáp án là: C. 12 tiểu đoàn bộ binh. </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
A. ar ou nd
B. s ou th
C. s ou venir
D. th ou sand Đáp án là: C. s ou venir </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Mạch RLC nối tiếp gồm điện trở R, cuộn cảm (L,r) và tụ điện C. Khi hiệu điện thế hai đầu đoạn mạch là u = 65 2 cos ω t V thì các điện áp hiệu dụng trên điện trở và cuộn dây đều bằng 13 V còn điện áp trên tụ là 65 V, công suất tiêu thụ trên toàn mạch là 25 W. Hệ số công suất của mạch là
A. 3/13
B. 5/13
C. 10/13
D. 12/13 Đáp án là: B. 5/13 </s> | [
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22134,
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyễn Bính được mệnh danh là:
A. Nhà thơ mới nhất trong những nhà thơ mới
B. Ông hoàng thơ tình
C. Lá cờ đầu của thơ ca cách mạng
D. Thi sĩ của đồng quê Đáp án là: D. Thi sĩ của đồng quê </s> | [
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1... |
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