text stringlengths 74 5k | input_ids listlengths 57 3.45k | attention_mask listlengths 57 3.45k |
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<s> Chọn đáp án đúng với câu hỏi: He was considered “the Man of the Match” because he had........ three goals in that match.
A. won
B. succeeded
C. picked
D. scored Đáp án là: D. scored </s> | [
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14514,
30024,
1363,
540... | [
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<s> Chọn đáp án đúng với câu hỏi: Tình thế bất lực, thảm hại và bi đát của Quận Huy được miêu tả qua những chi tiết nào?
A. Voi của Quận Huy cưỡi bị đâm chém túi bụi, bị ném gạch voi co vòi mà gầm, không dám húc nữa.
B. Khi định giương cúng bắn cung bị đứt dây; v... | [
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<s> Chọn đáp án đúng với câu hỏi: Phép trừ 712,54 - 48,9 có két quả đúng là
A. 70,765
B. 223,54
C. 663,64
D. 797,65 Đáp án là: C. 663,64 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Loại gió có cơ chế hoạt động quanh năm ở nước ta là:
A. Gió mùa Tây Nam
B. Gió mùa Đông Bắc
C. Tín phong
D. Gió mùa Đông Nam Đáp án là: D. Gió mùa Đông Nam </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. s a fety
B. t a sty
C. p a ncake
D. n a ture Đáp án là: C. p a ncake </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận định nào sau đây không đúng về hiện tượng tán sắc ánh sáng?
A. Ánh sáng Mặt trời gồm bảy ánh sáng đơn sắc (đỏ, cam, vàng, lục, lam, chàm, tím).
B. Chiết suất của lăng kính phụ thuộc vào màu của ánh sáng đơn sắc.
C. Ánh sáng... | [
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<s> Chọn đáp án đúng với câu hỏi: Tuyến đường biển nội địa quan trọng nhất ở nước ta là
A. Hải Phòng-Đà Nẵng.
B. TP. Hồ Chí Minh-Cửa Lò.
C. Hải Phòng-TP. Hồ Chí Minh.
D. TP. Hồ Chí Minh-Đà Nẵng. Đáp án là: C. Hải Phòng-TP. Hồ Chí Minh. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Indicate the word that differs from the other three in the position of primary stress:
A. consist
B. fashion
C. design
D. constrain Đáp án là: B. fashion </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các cân bằng. (1) H 2 (k) + I 2 (k) ⇌ 2HI (k) (2) 2NO (k) + O 2 (k) ⇌ 2NO 2 (k) (3) CO(k) + Cl 2 (k) ⇌ COCl 2 (k) (4) CaCO 3 (r) ⇌ CaO (r) + CO 2 (k) (5) 3Fe (r) + 4H 2 O (k) ⇌ Fe 3 O 4 (r) + 4H 2 (k) Các cân bằng chuyển dịch theo chiều thuận khi tăng áp suất là... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đặt điện áp xoay chiều có giá trị hiệu dụng không đổi, tần số thay đổi được vào hai đầu đoạn mạch gồm điện trở R, cuộn cảm thuần có độ tự cảm L, tụ điện có điện dung C. Khi tần số là f 1 thì điện áp hiệu dụng giữa hai đ... | [
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<s> Chọn đáp án đúng với câu hỏi: Each sentence has a mistake. Find it by choosing the letter A, B, C or D. We knew a lot of about the topic already, but his talk was interesting though.
A. a lot of
B. already
C. his talk
D. though Đáp án là: A. a lot of </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đâu là nguyên nhân chính dẫn đến bùng nổ các cuộc khởi nghĩa của nhân dân ta chống ách thống trị của nhà Minh?
A. Nhà Minh không thực hiện lời hứa khôi phục nhà Trần.
B. Chính sách cai trị tàn bạo của nhà Minh.
C. Sự phục hồi lự... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho x, y là số thực dương thỏa mãn lnx+lny≥ln(x^2+y). Giá trị nhỏ nhất P = x + y bằng
A. P_min=2√(2)+3.
B. P_min=6.
C. P_min=2+3√(2).
D. P_min=√(17)+√(3). Đáp án là: A. P_min=2√(2)+3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hòa tan hết 31,47 gam hỗn hợp X gồm Al, Zn, ZnCO 3 và Al(NO 3 ) 3 trong dung dịch chứa 0,585 mol H 2 SO 4 và 0,09 mol HNO3, kết thúc phản ứng thu được dung dịch Y chỉ chứa 79,65 gam các muối trung hòa và 4,032 lít (đktc) hỗn hợp khí Z gồm CO 2, N... | [
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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... |
<s> Chọn đáp án đúng với câu hỏi: Giới hạn phía trên của lớp vỏ địa lí là
A. Giới hạn trên của tầng đối lưu trong khí quyển.
B. Giới hạn dưới của lớp ôdôn trong khí quyển.
C. Giới hạn trên của tầng bình lưu trong khí quyển.
D. Toàn bộ khí quyển của trái đất. ... | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hai dòng điện cường độ I 1 = 6 A, I 2 = 9 A chạy trong hai dây dẫn thẳng song song dài vô hạn có chiều ngược nhau, được đặt trong chân khồng cách nhau một khoảng a = 10 cm. Qũy tích những điểm mà tại đó véc -tơ cảm ứng từ bằng 0 là
... | [
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379,
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31500,
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... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đồ thị li độ theo thời gian của chất điểm 1 (đường 1) và chất điểm 2 (đường 2) như hình vẽ, tốc độ cực đại của chất điểm 2 là 4 π cm/s. Không kể thời điểm t = 0, thời điểm hai chất điểm có cùng li độ lần thứ 5 là:
A. 4,0s
B... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: So với tốc độ tăng trưởng của toàn bộ nền kinh tế thế giới, tốc độ tăng trưởng của thương mại thế giới luôn
A. thấp hơn
B. thấp hơn rất nhiều
C. bằng nhau
D. cao hơn Đáp án là: D. cao hơn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho phản ứng hạt nhân: T 90 230 h → R 88 226 a + α. Phản ứng này là
A. phản ứng phóng xạ hạt nhân
B. phản ứng phân hạch
C. phản ứng nhiệt hạch
D. phản ứng thu năng lượng Đáp án là: A. phản ứng phóng xạ hạt nhân </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đàn lợn nước ta tập trung nhiều nhất ở đồng bằng sông Hồng và đồng bằng sông Cửu Long vì
A. Đây là hai đồng bằng rộng lớn, bằng phẳng, khí hậu ôn hòa
B. Các dịch vụ về giống, thú y được đảm bảo.
C. Nguồn thức ăn dồi d... | [
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<s> Chọn đáp án đúng với câu hỏi: People have.............when they get older.
A. much cells
B. fewer cells
C. few cell
D. plenty of cell Đáp án là: B. fewer cells </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Viết biểu thức P=a.sqrt[3](a^2.√(a))(a>0) dưới dạng lũy thừa với số mũ hữu tỉ ta được
A. P=a5/^3.
B. P=a5/^6.
C. P=a11/^6.
D. P=a^2. Đáp án là: C. P=a11/^6. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: My math teacher is the one who is the most _____ of the staff in the school.
A. respectable
B. respected
C. respective
D. respectful Đáp án là: A. respectable </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy gồm các dung dịch đều hòa tan được Cu(OH) 2 ở nhiệt độ phòng là
A. glucozơ, fructozơ và xenlulozơ
B. glucozơ, fructozơ và amilozơ
C. glucozơ, flurctozơ và tinh bột
D. glucozơ, fructozơ và saccarozơ Đáp án là: D. glucozơ, fructozơ và saccarozơ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hiện tượng nào dưới đây do nội lực gây ra?
A. Các lớp đá bị xô lệch.
B. Đá bị mài mòn do nước.
C. Các đồng bằng do sông bồi đắp.
D. Cát do ma sát của gió. Đáp án là: A. Các lớp đá bị xô lệch. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất sau : propyl clorua; anlyl clorua; phenyl clorua. Số chất tác dụng được với dung dịch NaOH loãng khi đun nóng là
A. 1
B. 0
C. 2
D. 3 Đáp án là: C. 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận định sơ đồ phản ứng sau: A l → X → A l 2 S O 4 3 → A l C l 3. Chất X là
A. A l 2 O 3.
B. A l O H 3.
C. H 2 S O 4.
D. A l N O 3 3. Đáp án là: A. A l 2 O 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các thay đổi khi tiến hành thí nghiệm sau: (a) Đưa lưu huỳnh đang cháy ngoài không khí vào bình chứa khí oxi. (b) Thay thế Zn hạt bằng Zn bột khi cho tác dụng với dung dịch HCl 1M ở cùng 25 o C. (c) Nén hỗn hợp khí N 2 và H 2 ở áp suấ... | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
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274,
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29884,
298,
228,
190,
146,
29875,
29901,
14542,
5777,
30103,
29883,
266,
388,
29871,
30128,
29877,
31500,
207,... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Văn bản: “Lão Hạc” có sự kết hợp các phương thức biểu đạt nào dưới đây?
A. Tự sự
B. Miêu tả.
C. Biểu cảm
D. cả A,B,C, đều đúng Đáp án là: C. Biểu cảm </s> | [
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3... | [
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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(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. Soot comes from the incomplete combustion of coal, oil, wood and other fuels.
A. heating
B. releasing
C. burning
D. cooking Đáp án... | [
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325,
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274,
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4485,
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350,
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315,
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470,
360,
373,... | [
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<s> Chọn đáp án đúng với câu hỏi: Sự khác nhau giữa ảnh thật và ảnh ảo ở thấu kính hội tụ:
A. Ảnh thật luôn cùng chiều với vật
B. Ảnh ảo luôn cùng chiều với vật
C. Ảnh thật luôn lớn hơn vật
D. Ảnh ảo luôn nhỏ hơn vật Đáp án là: D. Ảnh ảo luôn nhỏ hơn vật </... | [
1,
1,
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678,
30975,
29876,
29871,
30128,
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865,
325,
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274,
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2166,
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158,
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413,
2350,
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302,
29882,
585,
40... | [
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<s> Chọn đáp án đúng với câu hỏi: He'd just met (A) his girlfriend’s parents (B) for first time (C) so he was on his best (D) behavior.
A. his girlfriend’s
B. for first time
C. so
D. behavior Đáp án là: B. for first time </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 correct answer to each of the following questions. I think online learning will be the future of education and students will attend ______________ classrooms instead of going to school.
A. private
B. interactive
C. virtu... | [
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274,
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298,
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29875,
29901,
4485,
278,
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319,
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350,
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315,
470,
360,
373,
596,
... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Khoanh vào chữ cái đặt trước câu trả lời đúng:Các phân số nào dưới đây được xếp theo thứ tự từ bé đến lớn?
A. 1/2;2/5;2/7
B. 2/7;2/5;1/2
C. 2/5;2/7;1/2
D. 1/2;2/7;2/5 Đáp án là: B. 2/7;2/5;1/2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây không tham gia phản ứng trùng hợp?
A. Toluen.
B. Stiren.
C. Caprolactam.
D. Acrilonitrin. Đáp án là: A. Toluen. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chính tạo nên những vùng hoang mạc và bán hoang mạc rộng lớn ở miền Tây Trung Quốc
A. Hoạt động công nghiệp mạnh mẽ
B. Biến đổi khí hậu toàn cầu
C. Động đất mạnh, núi lửa phun trào
D. Khí hậu ôn đới lục địa Đáp án là... | [
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1,
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29976,
29886,
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1715,
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865,
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274,
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29875,
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405,
2543,
4099,
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302,
2350,
31500,
29876,
18558,
30103,... | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Vì sao có thể nói: “Ca Huế vừa sôi nổi, tươi vui, vừa trang trọng, uy nghi”?
A. Do ca Huế bắt nguồn từ nhạc dân gian
B. Do ca Huế bắt nguồn từ nhạc thính phòng
C. Do ca Huế bắt nguồn từ nhạc cung đình
D. Do ca Huế bắt nguồn từ nha... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chất nào dưới đây không tác dụng với dung dịch AlCl 3?
A. AgNO 3
B. Ag
C. NaOH
D. dung dịch NH 3 Đáp án là: B. Ag </s> | [
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1,
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<s> Chọn đáp án đúng với câu hỏi: Nền nông nghiệp cổ truyền có đặc điểm
A. thâm canh cao.
B. sản xuất theo hướng chuyên môn hoá.
C. dùng nhiều sức người.
D. sử dụng nhiều công nghệ mới. Đáp án là: C. dùng nhiều sức người. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép tính 73 – 21 + 3 là
A. 55
B. 56
C. 57
D. 58 Đáp án là: A. 55 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: He seems to ignore whatever we say to him, which is rather annoying.
A. to take no notice of
B. to pay attention to
C. to make a fuss about
D. to make sure of Đáp án là: D. to make sure of </s> | [
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<s> Chọn đáp án đúng với câu hỏi: During our holiday, we were so lucky to stay in a room with a good ______ of the sea.
A. view
B. look
C. sight
D. vision Đáp án là: A. view </s> | [
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865,
325,
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274,
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298,
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29875,
29901,
7133,
1749,
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22394,
29892,
591,
892,
577,
9885,
29891,
304,
79... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Điện trường là:
A. Môi trường không khí quanh điện tích
B. Môi trường chứa các điện tích
C. Môi trường bao quanh điện tích, gắn với điện tích và tác dụng lực điện lên các điện tích đặt trong nó
D. Môi trường dẫn điện Đáp án ... | [
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1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Henry Johnson/ honest/politician/ but/I/ never/ vote/ him/ because/ not/ agree/position/foreign/ policy
A. Henry Johnson is a honest politician. But I never vote him because I do not agree of his position at foreign policy.
B. Henry Johnson is an honest politician, but I would never vo... | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là đúng nhất khi nói về khái niệm gia tốc?
A. Gia tốc là đại lượng vật lý đặc trưng cho sự biến thiên nhanh hay chậm của vận tốc.
B. Độ lớn của gia tốc đo bằng thương số giữa độ biến thiên của vận to... | [
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... | [
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Để rửa sạch chai lọ đựng anilin, nên dùng cách nào?
A. Rửa bằng nước cất
B. Rửa bằng xà phòng
C. Rửa bằng dd muối ăn
D. Rửa bằng dd HCl, sau đó rửa lại bằng nước Đáp án là: D. Rửa bằng dd HCl, sau đó rửa lại bằng nước </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nghề làm muối phát triển nhất ở đâu?
A. Bắc Trung Bộ.
B. Duyên hải Nam Trung Bộ.
C. Đồng bằng sông Cửu Long.
D. Tây Nguyên. Đáp án là: B. Duyên hải Nam Trung Bộ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các bệnh, tật và hội chứng di truyền ở người sau đây: (1) Bệnh phêninkêto niệu (2) Bệnh ung thư máu (3) Tật có túm lông ở mép vành tai (4) Hội chứng Đao (5) Hội chứng Tơcnơ (6) Bệnh máu khó đông Những bệnh, tật và hội chu... | [
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11... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Amin có cấu tạo C H 3 C H 2 C H 2 N H C H 3 là amin:
A. bậc 3
B. bậc 2
C. bậc 1
D. bậc 4 Đáp án là: B. bậc 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chủ yếu hình thành gió mùa là
A. sự chênh lệch khí áp giữa xích đạo và vùng cận chí tuyến.
B. sự chênh lệch khí áp giữa vùng các chí tuyến và vùng ôn đới.
C. sự chênh lệch khí áp giữa bán cầu bắc và bán cầu Na... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho hàm số f(x)=(4^x)/(4^x+2). Tổng P=f(1/100)+f(2/100)+...+f(98/100)+f(99/100) bằng
A. 99/2.
B. 301/6.
C. 101/2.
D. 149/3 Đáp án là: A. 99/2. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I don't think we should expand our business in the current economic ______
A. climate
B. weather
C. humidity
D. latitude Đáp án là: A. climate </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một loài thực vật, alen A quy định lá nguyên trội hoàn toàn so với alen a quy định lá xẻ; alen B quy định hoa đỏ trội hoàn toàn so với alen b quy định hoa trắng. Cho cây lá nguyên, hoa đỏ giao phấn với cây lá nguyên, hoa trắng (P), thu được... | [
1,
1,
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207,... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: According to the passage, what is causing the mysterious high tides in Kiribati?
A. fuels
B. global warming
C. pollutants
D. ice caps Đáp án là: B. global warming </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguồn nước cung cấp chủ yếu cho các sông, hồ châu Phi do đâu?
A. mưa
B. băng tan
C. nước ngầm
D. biển, đại dương Đáp án là: A. mưa </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dạng địa hình nào sau đây thuận lợi cho trồng cây lương thực và thực phẩm?
A. Cao nguyên.
B. Đồng bằng.
C. Đồi.
D. Núi. Đáp án là: B. Đồng bằng. </s> | [
1,
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<s> Chọn đáp án đúng với câu hỏi: She complains noisily about everything she doesn’t like. She is the type of person who is always _____________.
A. making a fuss
B. doing a fuss
C. creating a fuss
D. giving a fuss Đáp án là: A. making a fuss </s> | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: Người ta thường sử dụng ròng rọc để làm các việc nào sau đây?
A. Đưa thùng hàng lên ô tô tải
B. Đưa xô vữa lên cao
C. Kéo thùng nước từ giếng lên
D. B và C đúng Đáp án là: D. B và C đúng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Paul is a very _______ character, he is never relaxed with strangers.
A. self-conscious
B. self-satisfied
C. self-directed
D. self-confident Đáp án là: A. self-conscious </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Too many tests and exams have put students under _________.
A. excitement
B. interest
C. pressure
D. influence Đáp án là: C. pressure </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Alice in Wonderland, first published in 1865, has being translated into thirty languages.
A. published
B. has
C. being
D. languages Đáp án là: C. being </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vùng nào sau đây nuôi trồng thủy sản phát triển mạnh nhất cả nước?
A. Đông Nam Bộ.
B. Đồng bằng sông Cửu Long.
C. Duyên hải Nam Trung Bộ.
D. Đồng bằng sông Hồng. Đáp án là: B. Đồng bằng sông Cửu Long. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong không gian Oxyz, cho hai điểm A(1;3;-1), B(5;4;-4). Khoảng cách giữa hai điểm A và B là:
A. √(16)
B. √(26)
C. 2√(2)
D. √(66) Đáp án là: B. √(26) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc sắc của đoạn văn trên:
A. Sử dụng nhiều tính từ có giá trị biểu cảm cao
B. Sử dụng ngôn từ tinh tế, giàu giá trị biểu cảm
C. Phát hiện ra giá trị văn hóa ẩn chứa trong thức quà giản dị
D. Cả 3 ý trên Đáp án là: D. Cả 3 ý trê... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Điện áp ở hai đầu một đoạn mạch có biểu thức là (V) (t tính bắng s). Giá trị của u ở thời điểm t = 5 ms là
A. -220 V.
B. 110 2 V.
C. 220 V.
D. - 110 2 V. Đáp án là: C. 220 V. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The president is preparing for a showdown with his advisers over his plans to _______ the economy.
A. reclaim
B. ameliorate
C. reform
D. rehabilitate Đáp án là: C. reform </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phần trắc nghiệmSố gồm có 6triệu, 8 chục nghìn, 7 chục viết là:
A. 6 800 700
B. 6 080 070
C. 6 008 700
D. 6 870 000 Đáp án là: B. 6 080 070 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm và sửa lỗi sai: You mustn’t to eat and drink in the library.
A. mustn’t
B. to eat
C. drink
D. the Đáp án là: B. to eat </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho sơ đồ chuyển hoá: C 2 H 5 Br → + NH 3, t ° X → + dd NaOH Y → + CH 3 OOH C 4 H 11 NO 2 X, Y lần lượt là
A. C 2 H 5 NH 3 Br, C 2 H 5 NH 2
B. CH 3 2 NH 2 Br, CH 3 2 NH
C. C 2 H 5 NH 3 Br, C 2 H 5 NH 3 ONa
D. C 2 H 5 NH 2, C 2 H 5 NH 3 Br Đáp án là: A. C 2 H 5 NH 3 Br, C 2 ... | [
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<s> Chọn đáp án đúng với câu hỏi: Man can hardly understand why many animals live their whole life in the desert, as
A. water is an essential part of his existence
B. very few large animals are found in the desert
C. sources of flowing water are rare in a desert
D. water composes the greater part of the tissues of livi... | [
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2020,
1784,
15006,
5735,
1009,
3353,
2834,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Our journey to the Yukon was a very rewarding experience and helped us relax after a hard-working week.
A. worthless
B. worthwhile
C. reliable
D. terrible Đáp án là: B. worthwhile </s> | [
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612,
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265,
471,
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Tiến hành phản ứng xà phòng hóa theo các bước sau: Bước 1: Cho vào bát sứ: 1 gam mỡ lợn và 2,5 ml dung dịch NaOH 40%. Bước 2: Đun hỗn hợp sôi nhẹ và liên tục khuấy đều bằng đũa thủy tinh (quá trình đun, có cho vào hỗn hợp vài giọt... | [
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323,
347,
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447,
30712,
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1374,
29874,... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Choose the word that has the underlined part pronounced differently from the rest
A. p i cture
B. t i cket
C. b i ology
D. c i nema Đáp án là: C. b i ology </s> | [
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278,
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<s> Chọn đáp án đúng với câu hỏi: Trong một hệ sinh thái, nhóm sinh vật nào sau đây được xếp vào sinh vật sản xuất?
A. Động vật bậc thấp
B. Động vật bậc cao
C. Thực vật
D. Động vật ăn mùn hữu cơ Đáp án là: C. Thực vật </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên tử nguyên tố X có electron cuối cùng thuộc phân lớp s, nguyên tử nguyên tố Y có electron cuối cùng thuộc phân lớp p. Biết rằng tổng số electron trong nguyên tử của X và Y là 20. Bản chất của liên kết hóa học trong hợp chất... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Các triều đại phong kiến ở Việt Nam đều theo thể chế nào sau đây?
A. Quân chủ chuyên chế.
B. Quân chủ lập hiến.
C. Dân chủ chủ nô.
D. Dân chủ đại nghị. Đáp án là: A. Quân chủ chuyên chế. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật rơi tự do từ độ cao 19,6m xuống đất. Vận tốc khi chạm đất của vật là bao nhiêu? Lấy g = 9,8 m/ s 2
A. 9m/s
B. 19,6m/s
C. 4,25m/s
D. 6,8m/s Đáp án là: B. 19,6m/s </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong các mệnh đề sau,mệnh đề nào sai?
A. Nếu 0≠a<1 thì log_aM>log_aN⇔0<M<N
B. Nếu 0<a<1 thì loga_ 2007>loga_ 2008
C. Nếu M,N>0 và 0<a≠1 thì log_a(M.N)=log_aM.log_aN
D. Nếu a>1 thì log_aM>log_aN⇔M>N>0 Đáp án là: C. Nếu M,N>0 và 0<a≠1 thì log_a(M.N)=log_aM.log_aN </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp E gồm hai chất hữu cơ A, B có cùng chức hóa học. Đun nóng 13,6 gam hỗn hợp E với dung dịch NaOH dư thu được sản phẩm gồm một muối duy nhất của một axit đơn chức, không no hỗn hợp hai rượu đơn chức, no kế tiếp nhau tro... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Thiên nhiên vùng núi Đông Bắc khác với Tây Bắc ở điểm
A. thiên nhiên mang sắc thái ôn nhiệt đới núi cao.
B. thiên nhiên mang sắc thái nhiệt đới gió mùa.
C. thiên nhiên mang sắc thái cận nhiệt đới gió mùa.
D. thiên nhiên mang sắc t... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Dòng điện thẳng dài I 1 được đặt vuông góc với phẳng của dòng điện tròn I 2 và đi qua tâm của h như hình vẽ. Lớn lực từ dòng I 1 tác dụng lên dòng I 2 là F 1. Độ lớn lực từ dòng I 2 tác dụng lên đoạn dây nhỏ đi qua tâm có chiều... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong thí nghiệm giao thoa ánh sáng khe Y-âng, trên màn quan sát vân sáng là những vị trí mà hai sóng ánh sáng tại đó:
A. lệch pha nhau 0, 5 π.
B. cùng pha.
C. ngược pha.
D. vuông pha. Đáp án là: D. vuông pha </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Điểm khác biệt cơ bản giữa ứng động với hướng động là?
A. Tác nhân kích thích không định hướng
B. Có sự vận động vô hướng
C. Không liên quan đến sự phân chia tế bào
D. Có nhiều tác nhân kích thích Đáp án là: A. Tác nhân kích ... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: A. serves B. hopes C. likes D. writes
A. serves
B. hopes
C. likes
D. writes Đáp án là: A. serves </s> | [
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865,
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319,
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315,
29889,
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267,
360,
2... | [
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<s> Chọn đáp án đúng với câu hỏi: Bậc của đa thức 12x^5y – 2x^7 + x^2y^6 là
A. 5.
B. 12.
C. 7.
D. 8. Đáp án là: D. 8 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: There was a long period without rain in the countryside last year so the harvest was poor.
A. epidemic
B. Drought
C. famine
D. flood Đáp án là: D. flood </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Điền dấu thích hợp vào chỗ chấm: -5/13... -7/13
A. >
B. <
C. =
D. Tất cả các đáp án trên đều sai Đáp án là: A. > </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các tính chất hoặc thuộc tính sau: (1) là chất rắn kết tinh, không màu; (2) tan tốt trong nuớc và tạo dung dịch có vị ngọt; (3) phản ứng với Cu(OH) 2 trong NaOH ở nhiệt độ thường; (4) tồn tại ở dạng mạch vòng và mạch hở; (5) có... | [
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29875,
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30103,
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10329,
31500,
... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn m gam triglixerit X cần 1,61 mol O 2, sinh ra 1,14 mol CO 2 và 1,06 mol H 2 O. Cho 7,088 gam X tác dụng vừa đủ với dung dịch NaOH thì khối lượng muối tạo thành là
A. 7,312 gam.
B. 7,412 gam.
C. 7,612 gam.
D. 7,512 gam. Đáp án là: A. 7,312 g... | [
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<s> Chọn đáp án đúng với câu hỏi: Phan Bội Châu cùng quê với nhà thơ nào dưới đây?
A. Tố Hữu
B. Hạ Chi Trương
C. Hồ Chí Minh
D. Ai-ma-tốp Đáp án là: C. Hồ Chí Minh </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cơ cấu ngành kinh tế trong GDP ở nước ta đang có sự chuyển dịch theo hướng
A. Tăng tỉ trọng khu vực III, tăng tỉ trọng khu vực I
B. Tăng tỉ trọng khu vực II, giảm tỉ trọng khu vực I
C. Giảm tỉ trọng khu vực I và giảm tỉ trọng khu vực I... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Với tính chất đa dạng của khí hậu, kết hợp với các tập đoàn cây trồng, vật nuôi phong phú là cơ sở để phát triển ngành nào sau đây?
A. Công nghiệp khai thác dầu khí.
B. Công nghiệp khai thác quặng kim loại.
C. Công nghiệp chế bi... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Dầu khí là nguồn tài nguyên có ý nghĩa quyết định đối với sự phát triển kinh tế của khu vực
A. Bắc Phi.
B. Nam Phi.
C. Đông Phi.
D. Tây Phi. Đáp án là: A. Bắc Phi. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu không đúng. Khi hiện tượng khúc xạ ánh sáng từ không khí vào nước thì.
A. góc tới i lớn hơn góc khúc xạ r
B. góc tới i bé hơn góc khúc xạ r
C. góc tới i đồng biến góc khúc xạ r
D. tỉ số sini với sinr là không đổi Đáp án... | [
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<s> Chọn đáp án đúng với câu hỏi: Chức năng chủ yếu của cacbohiđrat là
A. Dự trữ và cung cấp năng lượng cho tế bào, tham gia cấu tạo NST
B. Dự trữ và cung cấp năng lượng cho tế bào, tham gia xây dựng cấu trúc tế bào
C. Kết hợp với prôtêin vận chuyển các chấ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho C 2 H 5 OH và ba hợp chất thơm sau: C 6 H 5 OH, CH 3 C 6 H 4 OH, C 6 H 5 CH 2 OH. Có bao nhiêu chất phản ứng được với kim loại natri nhưng không phản ứng được với dung dịch NaOH?
A. 1
B. 3
C. 2
D. 4 Đáp án là: C. 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các phát biểu sau: (a) Thủy phân hoàn toàn vinyl axetat bằng NaOH thu được natri axetat và andehit fomic (b) Polietilen được điều chế bằng phản ứng trùng ngưng. (c) Ở điều kiện thường anilin là chất lỏng tan tốt trong nước. (d) Amilozơ... | [
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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... |
<s> Chọn đáp án đúng với câu hỏi: The schools teach a (56) ________ many things of value to the future accountant, doctor or electrician.
A. large
B. great
C. far
D. lots Đáp án là: B. great </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,
450,
12462,
6860,
263,
313,
29945,
29953,
29897,
903,
7652,
22359,
... | [
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,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Có 4 dung dịch riêng biệt: FeCl 2, ZnCl 2, NaCl, AlCl 3. Nếu thêm dung dịch KOH dư vào mỗi dung dịch trên thì số dung dịch cho kết tủa sau thí nghiệm là
A. 1
B. 2
C. 3
D. 4 Đáp án là: A. 1 </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,
3189,
30103,
29871,
29946,
270,
686,
652,
31214,
305,
364,
347,
315... | [
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,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Nhà sử học Ngô Thì Sĩ ở thế kỉ XVII có viết: “Những chiến công các đời Đinh, Lê, Lý, Trần vẫn còn nhờ vào uy thanh lẫm liệt để lại ấy...là vũ công cao cả, vang dội đến nghìn thu, há phải chỉ lừng lẫy ở một thời bấy giờ... | [
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,
405,
2350,
30712,
480,
207,
158,
207,
140,
5089,
31214,
29883,
405,... | [
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,
1,
1,
1,
1,
1... |
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