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<s> Chọn đáp án đúng với câu hỏi: According to the passage,the practice of shaking hands ________________.
A. was used to extend greetings
B. used to be popular, but now it is out of date.
C. is replaced by other customs in some countries.
D. is considered not to be very polite. Đáp án là: C. is replaced by other custo... | [
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<s> Chọn đáp án đúng với câu hỏi: The word “ estimated ” in paragraph 2 is closest in meaning to_________.
A. commented
B. judged
C. observed
D. discovered Đáp án là: B. judged </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kết quả đúng của limx→−1(sqrt[3](x)+1)/(√(x^2+3)−2) bằng
A. −2/3
B. (−1)/(sqrt[3](4)−2)
C. 0
D. 1 Đáp án là: A. −2/3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: We can save natural resources by using ______ energy instead of gas, oil and coal.
A. sunny
B. solar
C. sunrise
D. sunshine Đáp án là: B. solar </s> | [
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<s> Chọn đáp án đúng với câu hỏi: (x−y)^2 bằng:
A. x^2+y^2
B. x^2−2xy+y^2
C. y^2−x^2
D. x^2−y^2 Đáp án là: B. x^2−2xy+y^2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một este có công thức phân tử là C 4 H 8 O 2, khi thủy phân trong môi trường axit thu được ancol etylic. Công thức cấu tạo của C 4 H 8 O 2 là
A. C 3 H 7 COOH.
B. CH 3 COOC 2 H 5.
C. HCOOC 3 H 7.
D. C 2 H 5 COOCH 3 Đáp án là: B. CH 3 COOC 2 H 5. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng với hoạt động khai thác và chế biến gỗ của vùng Tây Nguyên?
A. Sản lượng gỗ hàng năm tăng liên tục.
B. Lâm nghiệp là thế mạnh của Tây Nguyên.
C. Còn nhiều rừng gỗ quý, chim và thú quý.
D. Tài nguy... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho một mạch dao động LC lí tưởng điện tích trên một bản một của tụ điện biến thiên theo thời gian với phương trình q = Q 0 cos ω t + φ. Lúc t = 0 năng lượng điện trường đang bằng 3 lần năng lượng từ trường, điện tích trên bản... | [
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<s> Chọn đáp án đúng với câu hỏi: Tháng 9 – 1791, Hiến pháp được thông qua ở Pháp, xác lập quyền thống trị của giai cấp tư sản dưới hình thức
A. quân chủ lập hiến
B. cộng hòa tư sản
C. độc tài quân sự
D. quân chủ chuyên chế Đáp án là: A. quân chủ lập hiến </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I’d like to take this...........of wishing you all the best of luck with your exams.
A. likelihood
B. possibility
C. probability
D. opportunity Đáp án là: D. opportunity </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kinh tế và chính trị có mối quan hệ như thế nào theo quan điểm đối mới của Đảng?
A. tách bạch với nhau.
B. chính trị quyết định hơn.
C. gắn liền với nhau.
D. chính trị là trọng tâm. Đáp án là: C. gắn liền với nhau. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thành phần nào dưới đây không có trong cấu tạo của opêron Lac ở E.coli?
A. Gen điều hoà
B. Nhóm gen cấu trúc
C. Vùng vận hành (O)
D. Vùng khởi động (P) Đáp án là: A. Gen điều hoà </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Rewrite sentences without changing the meaning It is necessary to come to class on time.
A. It is not necessary to come to class late
B. You must coming to class on time.
C. If you don’t come to class on time, you will be expired
D. You must come to class on time. Đáp án là: D. You mus... | [
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<s> Chọn đáp án đúng với câu hỏi: EU trở thành trung tâm kinh tế hàng đầu của thế giới là do
A. tạo được thị trường và sử dụng đồng tiền chung.
B. có tốc độ tăng trưởng cao hàng đầu thế giới.
C. có nhiều quốc gia thành viên.
D. diện tích lớn, dân số đông. Đ... | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Diêm tiêu có nhiều ứng dụng quan trọng như: C hế tạo thuốc nổ đen, làm phân bón, cung cấp nguyên tố nitơ và kali cho cây trồng,... Công thức hóa học của diêm tiêu là
A. KCl
B. K 2 CO 3
C. KClO 3
D. KNO 3 Đáp án là: D. KNO 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: y : 5 = 4
A. y = 9
B. y = 1
C. y = 20
D. y = 25 Đáp án là: C. y = 20 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy các chất đều cho được phản ứng thủy phân là:
A. amilopectin, xenlulozơ, glucozơ, protein.
B. saccarozơ, triolein, amilozơ, xenlulozơ.
C. amilozơ, saccarozơ, protein, fructozơ.
D. triolein, amilozơ, fructozơ, protein. Đáp án là: B. saccarozơ, triolein, amil... | [
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<s> Chọn đáp án đúng với câu hỏi: Menđen đã sử dụng phương pháp nào dưới đây để phát hiện ra quy luật phân li và phân li độc lập?
A. Gây đột biến nhân tạo
B. Phân tích các thế hệ lai
C. Lai xa kèm đa bội hóa
D. Lai thuận nghịch Đáp án là: B. Phân tích các thế hệ lai... | [
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<s> Chọn đáp án đúng với câu hỏi: Tiến hành các thí nghiệm sau ở điều kiện thường: (a) Sục a mol khí Cl 2 vào dung dịch chứa 2a NaOH; (b) Hấp thụ hết a mol CO 2 vào dung dịch chứa a mol Na 2 CO 3 ; (c) Cho a mol Fe 3 O 4 vào dung dịch chứa 2a mol HCl; (d) Cho hỗn hợp 2a mo Fe 2 O ... | [
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<s> Chọn đáp án đúng với câu hỏi: It is hoped that illiteracy will soon be (7) in our country as more and more people are taking part in the struggle against it.
A. limitted
B. eradicated
C. completed
D. prevented Đáp án là: B. eradicated </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đến giữa thế kỉ XIX, kinh tế tư bản chủ nghĩa ở Đức phát triển nhanh chóng làm cho
A. đội ngũ công nhân tăng nhanh
B. giai cấp nông dân tăng nhanh
C. giai cấp tư sản tăng nhanh
D. giai cấp tư sản và công nhân tăng nhanh Đáp án là: A. đội ... | [
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<s> Chọn đáp án đúng với câu hỏi: Địa hình chủ yếu của Nhật Bản là
A. đồi núi
B. đồng bằng
C. cao nguyên
D. bình nguyên Đáp án là: A. đồi núi </s> | [
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<s> Chọn đáp án đúng với câu hỏi: We spend about one-third of our lives sleeping. We know relatively little about sleep.
A. We shall know more about sleep if we spend more than one-third of our lives sleeping.
B. Despite spending about one-third of our lives sleeping, we know relatively little about sleep.
C. We spend ... | [
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<s> Chọn đáp án đúng với câu hỏi: Mitchell bought this second-hand car.He regrets it now.
A. If Mitchell didn’t buy this second-hand car,he wouldn’t regret it now.
B. Mitchell will regret in case he buys this second-hand car.
C. Mitchell regrets not having bought this second-hand car.
D. Mitchell wishes he hadn’t bough... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho một ống dây quấn trên lõi thép có dòng điện chạy qua đặt gần một khung dây kín ABCD như hình vẽ. Cường độ dòng điện trong ống dây có thể thay đổi được nhờ biến trở có có con chạy R. Nếu dịch chuyển con chạy của biến tro... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC có BC < AC, khi đó :
A. A^<C^
B. A^<B^
C. C^<B^
D. B^<C^ Đáp án là: B. A^<B^ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tỉ suất gia tăng dân số tự nhiên của Nhật Bản hiện nay là:
A. Khoảng 0,1%.
B. Khoảng 0,6%.
C. Khoảng 1,2%.
D. Khoảng 1,5%. Đáp án là: A. Khoảng 0,1%. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Giá trị của \[N = - \frac{1}{7}\left( {9\frac{1}{2} - 8,75} \right):\frac{2}{7} + 0,625:1\frac{2}{3}\] là:
A. \[ - \frac{5}{6}\]
B. 0
C. \[ - \frac{6}{5}\]
D. 1 Đáp án là: B. 0 </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đến cuối thế kỉ XIX, quốc gia nào ở khu vực Đông Nam Á vẫn giữ được nền độc lập tương đối?
A. In-đô-nê-xi-a
B. Xiêm
C. Mã Lai
D. Phi-líp-pin Đáp án là: B. Xiêm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lựa chọn đáp án đúng nhất:Hai lớp 4A và 4B tổ chức đi cắm trại, lớp 4A có 48 bạn tham gia, lớp 4B có 36 bạn tham gia. Tính xem cả hai lớp phải dùng bao nhiêu mái lều để dựng trại, biết rằng ban tổ chức quy định mỗi trại là 6 học sinh.
A. 14 mái lều
B. 12 mái lều
C. 8 mái lều
D. 6 mái l... | [
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<s> Chọn đáp án đúng với câu hỏi: Chất Iốt phóng xạ I dùng trong y tế có chu kỳ bán rã 8 ngày đêm. Nếu nhận được 100g chất này thì sau 8 tuần lễ còn bao nhiêu?
A. 7,8g
B. 0,78g
C. O,87g
D. 8,7g Đáp án là: B. 0,78g </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lai 2 dòng bí thuần chủng quả tròn, thu được F1 toàn quả dẹt; cho F1 tự thụ phấn F2 thu được 271 quả dẹt : 179 quả tròn : 28 quả dài. Kiểu gen của bố mẹ là:
A. AAbb x aaBB
B. AaBb x AaBb
C. AaBB x Aabb
D. AABB x aabb Đáp án là: A. AAbb x aaBB </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kiểu phát triển của động vật qua biến thái hoàn toàn là kiểu phát triển mà còn non có đặc điểm hình thái
A. C ấu tạo tương tự với con trưởng thành, nhưng khác về sinh lý.
B. S inh lý rất khác với con trưởng thành.
C. C ấu tạo... | [
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<s> Chọn đáp án đúng với câu hỏi: The _______ for face masks and hand sanitizers has risen in recent months.
A. effect
B. clothing
C. landfill
D. demand Đáp án là: D. demand </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Công suất tức thời của dòng điện xoay chiều:
A. Luôn biến thiên với tần số bằng hai lần tần số của dòng điện.
B. Có giá trị trung bình biến thiên theo thời gian
C. Không thay đổi theo thời gian, tính bằng công thức P = Iucosφ
D. Lu... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về tia hồng ngoại, phát biểu nào sau đây sai?
A. Tia hồng ngoại có bước sóng nhỏ hơn bước sóng của tia X
B. Tính chất nổi bật của tia hồng ngoại là tác dụng nhiệt
C. Bản chất của tia hồng ngoại là sóng điện từ
D. Tia hồng... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong thí nghiệm Y-âng về giao thoa ánh sáng, hai khe được chiếu bằng ánh sáng trắng có bước sóng từ 0,38 μm đến 0,76 μm. Tại vị trí vân sáng bậc 4 của ánh sáng đơn sắc có bước sóng 0,76 μm còn có bao nhiêu vân sáng nữa của các án... | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn a mol hỗn hợp X gồm 2 amin no đơn chức mạch hở thu được 5,6 (l) CO 2 (đktc) và 7,2 g H 2 O. Giá trị của a là
A. 0,05 mol
B. 0,1 mol
C. 0,15 mol
D. 0,2 mol Đáp án là: B. 0,1 mol </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hai thấu kính được ghép đồng trục, thấu kính L 1 có tiêu cự f 1 = 10 c m, thấu kính L 2 có tiêu cự f 2 = − 10 c m. Khoảng cách giữa hai kính là a = 40 c m. Phía ngoài hệ, trước L 1 có vật sáng AB vuông góc với trục chính hệ thấu kính ... | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D to indicate the sentence that is CLOSEST in meaning to each of the following questions. His eel soup is better than any other soups I have ever eaten
A. Of all the soups I have ever eaten, his eel soup is the best.
B. I have ever eaten many soups that are ... | [
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<s> Chọn đáp án đúng với câu hỏi: Động vật nào sau đây có dạ dày đơn
A. Bò
B. Trâu
C. Ngựa
D. Cừu Đáp án là: C. Ngựa </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có thể lập được nhiều nhất bao nhiêu tỉ lệ thức từ năm số 2;3;5;24;16 (mỗi số trong tỉ lệ thức chỉ được viết một lần )?
A.8
B.4
C.0
D.16 Đáp án là: B.4 </s> | [
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301,
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29886,
29871,
30128,
30416,
31645... | [
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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1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hòa tan hết 2,34 gam kim loại kiềm M vào H 2 O dư, thu được 0,672 lít khí H 2 (đktc). Kim loại M là
A. Na
B. K
C. Li
D. Rb Đáp án là: B. K </s> | [
1,
1,
29871,
678,
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29876,
29871,
30128,
29976,
29886,
29871,
1715,
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30030,
865,
325,
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274,
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298,
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29901,
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10345,
540,
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30103,
29873,
29871,
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29... | [
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1,
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1,
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1,
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1,
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1,
1,
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1,
1,
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1,
1,
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,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: My mother always keeps candles in the room......the lights go out.
A. unless
B. if
C. in case
D. though Đáp án là: C. in case </s> | [
1,
1,
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865,
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29901,
1619,
5637,
2337,
14874,
23794,
793,
297,
278,
5716,
3045,
636,
155... | [
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: A personal communicator helps you to ____ __ __ with other computers and with people around the world.
A. demonstrate
B. interact
C. content
D. transmit Đáp án là: B. interact </s> | [
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29901,
319,
7333,
7212,
1061,
6911,
366,
304,
903,
22359,
4770,
4770,
411,... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Two friends Diana and Anne are talking about their upcoming exams. - Diana:” Our midterm exams will start next Tuesday, are you ready?” - Anne:” ___________ ”
A. I’m half ready.
B. God save you.
C. Thank you so much
D. Don’t mention it! Đáp án là: A. I’m half ready. </s> | [
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360,
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322,
10558,
526,
9963,
1048,
1009,
701,
1150... | [
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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: Câu nào rõ nhất tâm trạng lo sợ của Bấc sau khi được Thoóc-tơn cứu sống?
A. Một thời gian dài sau khi được cứu sống, Bấc không muốn rời Thoóc-tơn một bước.
B. Từ lúc anh ra khỏi lều cho đến lúc anh quay trở về, Bấc luôn bá... | [
1,
1,
29871,
678,
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29876,
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29886,
29871,
1715,
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865,
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274,
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298,
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29901,
9243,
31500,
29884,
1055,
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29877,
696,
30478,
302,
2350,
31500,... | [
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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: Diện tích S hình phẳng giới hạn bởi các đường thẳng y = x^3 + 1; y = 0; x = 0; x = 1 là
A. 3/4;
B. 4/3;
C. 5/4;
D. 7/4. Đáp án là: C. 5/4; </s> | [
1,
1,
29871,
678,
30975,
29876,
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30128,
29976,
29886,
29871,
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1374,
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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: Chỉ dùng thêm một thuốc thử nào có thể phân biệt các dung dịch sau: BaCl 2, MgSO 4, Na 2 SO 3, KNO 3, K 2 S.
A. HCl
B. H 2 SO 4
C. BaCl 2
D. Ba(OH) 2 Đáp án là: B. H 2 SO 4 </s> | [
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1,
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3... | [
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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: Hòa tan hoàn toàn 8,94 gam hỗn hợp gồn Na, K và Ba vào nước, thu được dung dịch X và 2,688 lít khí H 2 (đktc). Dung dịch Y gồm HCl và H 2 SO 4, tỉ lệ mol tương ứng là 4 : 1. Trung hòa dung dịch X bởi dung dịch Y, tổng khối lượng các muối ... | [
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,
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29875,
29901,
8335,
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29874,
10345,
5089,
29874,
30712,
29876,
304,
29874,
307... | [
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: Từ glyxin và alanin tạo được tối đa số đipeptit là
A. 2
B. 3
C. 4
D. 1 Đáp án là: C. 4 </s> | [
1,
1,
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678,
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29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
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274,
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29875,
29901,
12603,
207,
158,
30712,
330,
368,
29916,
262,
2947,
30712,
394,
273... | [
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong tế bào của vi khuẩn E. coli, Gọi N là số nuclêôtit của gen cấu trúc thì số axitamin cần thiết mà môi trường nội bào phải cung cấp để tổng hợp một chuỗi pôlipeptit là:
A. N/6 – 2.
B. N/3 – 2.
C. N/3 – 1.
D. N/6 – 1. Đáp án là: D. N/6 –... | [
1,
1,
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865,
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1605,
549,
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30712,
29877,
2723,
207,
140,
2... | [
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Choose the word has different stress from others
A. counterpart
B. support
C. romantic
D. attractive Đáp án là: A. counterpart </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: The company allows some customers to buy goods on________and pay for them later.
A. card
B. cheque
C. credit
D. cash Đáp án là: C. credit </s> | [
1,
1,
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450,
5001,
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373,
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51... | [
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1,
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: I’m scared ________ snakes, they terrify me.
A. in
B. to
C. of
D. for Đáp án là: C. of </s> | [
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1,
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306,
30010,
29885,
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1965,
903,
7652,
22359,
5807,
6926,
29892,
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các thông tin sau: 1. Các gen nằm trên cùng một cặp nhiễm sắc thể (NST). 2. Mỗi gen nằm trên một NST khác nhau. 3. Thể dị hợp hai cặp gen giảm phân bình thường cho 4 loại giao tử. 4. Tỉ lệ một loại kiểu hình chung bằng tích tỉ l... | [
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1,
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678,
30975,
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29871,
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29871,
30128,
30030,
865,
325,
31280,
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274,
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29884,
298,
228,
190,
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29875,
29901,
14542,
5777,
30103,
29883,
266,
29877,
31500,
865,
27773,
12507,
2990... | [
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1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
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<s> Chọn đáp án đúng với câu hỏi: Nhận định nào sau đây là đúng?
A. Đun nóng cao su với lưu huỳnh thu được cao su buna.
B. Đun nóng phenol với anđehit fomic thu được tơ PPF.
C. Tơ teflon là poliamit.
D. Tơ nhân tạo visco được điều chế từ xenlulozo. Đáp án là: D. Tơ nhân tạo visco ... | [
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,
31214,
31500,
29876,
29871,
30128,
29875,
31214,
29876,
29... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Ai là người chỉ đạo cuộc kháng chiến chống Tống xâm lược thời Lý?
A. Lý Kế Nguyên
B. Vua Lý Thánh Tông
C. Lý Thường Kiệt
D. Tông Đản Đáp án là: C. Lý Thường Kiệt </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
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865,
325,
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274,
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29875,
29901,
319,
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425,
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302,
2543,
207,
158,
29877,
207,
158,
30712... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Đâu không phải là nét văn hóa đặc trưng của các dân tộc ít người ở nước ta?
A. Chợ phiên.
B. Tục bắt vợ.
C. Sử dụng tiếng Việt.
D. Hội chơi núi mùa xuân. Đáp án là: D. Hội chơi núi mùa xuân </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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865,
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274,
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298,
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30250,
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413,
1251,
31500,
865,
1374,
29874... | [
1,
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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. gener a tion
B. gr a teful
C. educ a te
D. gr a ndparents Đáp án là: D. gr a ndparents </s> | [
1,
1,
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29871,
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29871,
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865,
325,
31280,
29875,
274,
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29884,
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29901,
10987,
278,
1734,
607,
756,
263,
1422,
6047,
297,
278,
760,
1090,
... | [
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<s> Chọn đáp án đúng với câu hỏi: Hai kim loại có thể được điều chế bằng phương pháp điện phân dung dịch là
A. Al và Mg
B. Na và Fe
C. Cu và Ag
D. Mg và Zn Đáp án là: C. Cu và Ag </s> | [
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379,
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31... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong số các kim loại đồng, nhôm, sắt, bạc, kim loại nào dẫn điện tốt nhất?
A. Sắt.
B. Nhôm.
C. Bạc.
D. Đồng. Đáp án là: C. Bạc. </s> | [
1,
1,
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29886,
29871,
1715,
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865,
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1605,
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413,
326,
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29... | [
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<s> Chọn đáp án đúng với câu hỏi: You can study hard for this exam ________ you can fail,
A. however
B. yet
C. and
D. or Đáp án là: D. or </s> | [
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29901,
887,
508,
6559,
2898,
363,
445,
4392,
903,
7652,
22359,
366,
508,
... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Sự kiện nào thể hiện sự bắt tay giữa Pháp và Trung Hoa Dân Quốc để chống phá cách mạng Việt Nam?
A. Hiệp ước Hoa- Pháp
B. Hiệp ước Nam Kinh
C. Hòa ước Thiên Tân
D. Hiệp ước Pháp- Trung Đáp án là: A. Hiệp ước Hoa- Pháp </s> | [
1,
1,
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29976,
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1715,
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<s> Chọn đáp án đúng với câu hỏi: Bài thơ được viết theo thể thơ nào?
A. Tự do
B. Năm chữ
C. Bảy chữ
D. Lục bát Đáp án là: A. Tự do </s> | [
1,
1,
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6000,
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<s> Chọn đáp án đúng với câu hỏi: Đâu là năm sinh, năm mất của Vũ Đình Liên?
A. 1913 – 1996
B. 1920 – 2014
C. 1930 – 2015
D. 1940 – 2020 Đáp án là: A. 1913 – 1996 </s> | [
1,
1,
29871,
678,
30975,
29876,
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29871,
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<s> Chọn đáp án đúng với câu hỏi: What measures have been ______ to control traffic jam at rush hours?
A. imagined
B. taken
C. done
D. carried Đáp án là: B. taken </s> | [
1,
1,
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678,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên tố nào sau đây vừa là thành phần của axit nucleic, ATP, photpholipit và các côenzim?
A. Kali
B. Photpho
C. Magie
D. Lưu huỳnh Đáp án là: B. Photpho </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hợp chất hữu cơ X chứa vòng benzen có công thức phân tử trùng với công thức đơn giản nhất. Trong X, tỉ lệ khối lượng các nguyên tố là m C : m H : m O = 21 : 2 : 8. Biết khi X phản ứng hoàn toàn với Na thì thu được số mol khí hiđro... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
325,
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29875,
274,
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298,
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29875,
29901,
8335,
207,
158,
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31500,
30103,
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22888,
207,... | [
1,
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1,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Số ba mươi nghìn không trăm linh bảy viết là :
A. 300 007
B. 30 007
C. 3 007
D. 30 070 Đáp án là: B. 30 007 </s> | [
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678,
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29871,
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865,
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317,
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1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Phía dưới tầng nước ngầm là
A. tầng đất, đá không thấm nước.
B. nhiều đất, hàm lượng khoáng.
C. các tầng đất, đá dễ thấm nước.
D. giàu chất khoáng, nhiều đá vôi. Đáp án là: A. tầng đất, đá không thấm nước. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các dung dịch sau: anđehit fomic (1), axit axetic (2), glixerol (3), etyl axetat (4), glucozơ (5), hồ tinh bột (6), lòng trắng trứng (7), dung dịch hòa tan được kết tủa C u ( O H ) 2 ở điều kiện thường là:
A. (3), (6), (7).
B. (3), (5), (7).
C. (1), (2... | [
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652,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây sai?
A. Glucozơ và Fructozơ là các monosacarit
B. Etyl amin là chất khí ở điều kiện thường
C. Phenol và Anilin có cùng số nguyên tử H
D. Cho dung dịch AgNO 3 /NH 3 vào dung dịch glucozơ thu được kết tủa Đáp án là: C. Phenol... | [
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<s> Chọn đáp án đúng với câu hỏi: Một quần thể thực vật đang ở trạng thái cân bằng di truyền có tần số kiểu gen aa là 0,16. Theo lý thuyết tần số alen A của quần thể này là
A. 0,4
B. 0,32
C. 0,48
D. 0,6 Đáp án là: D. 0,6 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chức năng chính của phospholipid trong tế bào là
A.Cấu tạo màng sinh chất
B. Cung cấp năng lượng
C. Nhân biết và truyền tin
D. Liên kết các tế bào Đáp án là: A.Cấu tạo màng sinh chất </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tập hợp H = {2; 5; 8;...; 74}. Phương án đúng là
A. \(10 \in H\);
B. \(73 \in H\);
C. \(56 \notin H\);
D. \(59 \in H\). Đáp án là: D. \(59 \in H\) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: These old houses are going to be__________ soon.
A. run down
B. knocked out
C. pulled down
D. laid out Đáp án là: C. pulled down </s> | [
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<s> Chọn đáp án đúng với câu hỏi: the more we read and learn, the more the number of words that mean something (31) ____.
A. is increasing
B. are increasing
C. increase
D. increases Đáp án là: D. increases </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đạo hàm của \[y = {\left( {{x^3} - 2{x^2}} \right)^2}\]bằng :
A. \[6{x^5} - 20{x^4} + 16{x^3}\].
B. \[6{x^5} + 16{x^3}\].
C. \[6{x^5} - 20{x^4} + 4{x^3}\].
D. \[6{x^5} - 20{x^4} - 16{x^3}\]. Đáp án là: A. \[6{x^5} - 20{x^4} + 16{x^3}\]. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc đơn dao động nhỏ quanh vị trí cân bằng. Thời điểm ban đầu vật ở bên trái vị trí cân bằng, dây treo hợp với phương thẳng đứng góc 0,01 rad, vật được truyền tốc độ π cm/s theo chiều từ trái sang phải. Chọn trục Ox n... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong chiến lược Chiến tranh đặc biệt (1961 - 1965) ở miền Nam Việt Nam, Mĩ và chính quyền Sài Gòn không thực hiện biện pháp nào dưới đây?
A. Triển khai hoạt động chống phá miền Bắc.
B. Tiến hành các cuộc hành quân càn quét.
C.... | [
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<s> Chọn đáp án đúng với câu hỏi: Tại hai điểm A và B cách nhau 5 cm trong chân không có hai điện tích diêm q 1 = +5600/9 nC và q 2 = - 12.10 - 8 C. Tính độ lớn cường độ điện trường tồng hợp tại điểm c cách A và cách B làn lượt là 4 cm và 3 cm
A. 1273 kV/m.
B. 1500 kV/m.
C. 1... | [
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<s> Chọn đáp án đúng với câu hỏi: A third of people said they never spoke to their neighbors at (7)_____.
A. least
B. once
C. all
D. most Đáp án là: C. all </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy gồm tất cả các amin là
A. C H 3 N H 2, C H 3 C O O H, C 2 H 5 O H, C 6 H 12 O 6
B. C 2 H 5 O H, C H 3 N H 2, C 2 H 6 O 2, H C O O H.
C. C 2 H 5 N H 2, ( C H 3 ) 3 N, C H 3 C H O, C 6 H 12 O 6.
D. C 2 H 5 N H 2, ( C H 3 ) 3 N, C H 3 N H 2, C 6 H 5 N H 2. Đáp án là: D. C 2 H ... | [
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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... |
<s> Chọn đáp án đúng với câu hỏi: According to the passage, Portobello Market has been featured in all of the following EXCEPT ______.
A. films
B. documentaries
C. books
D. songs Đáp án là: D. songs </s> | [
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29901,
7579,
304,
278,
13382,
29892,
3371,
711,
3156,
28794,
756,
1063,
15... | [
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Ở cừu, kiểu gen AA quy định có sừng, kiểu gen aa quy định không sừng; kiểu gen Aa quy định có sừng ở đực và không sừng ở cái. Phép lai nào sau đây sẽ cho đời con có 100% có sừng
A. AA × aa
B. Aa × Aa
C. AA × Aa
D. AA × AA Đáp án là: D. AA × AA... | [
1,
1,
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29901,
438,
207,
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207,
140,
2723,
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158,
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413,
... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
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: So sánh bản chất thì dòng điện trong các môi trường nào do cùng một loại hạt tải điện tạo lên?
A. Kim loại và chân không.
B. Chất điện phân và chất khí.
C. Chân không và chất khí.
D. Không có hai môi trường như vậy. Đáp án là: A. Kim ... | [
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1,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Dung dịch nào sau đây làm quỳ tím đổi sang màu xanh
A. NaNO 3
B. NaOH
C. HNO 3
D. HCl Đáp án là: B. NaOH </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Công thức phân tử của buta – 1,3 – đien (đivinyl) và isopren (2 –metylbuta–1,3–đien) lần lượt là
A. C 4 H 6 và C 5 H 10.
B. C 4 H 4 và C 5 H 8.
C. C 4 H 6 và C 5 H 8.
D. C 4 H 8 và C 5 H 10. Đáp án là: C. C 4 H 6 và C 5 H 8. </s> | [
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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: Hòa tan hết 15,84 gam hỗn hợp X gồm Mg, Al, Al 2 O 3 và MgCO 3 trong dung dịch chứa 1,08 mol NaHSO 4 và 0,32 mol HNO 3, kết thúc phản ứng thu được dung dịch Y chỉ chứa các muối trung hòa có khối lượng 149,16 gam và 2,688 lít (đktc) hỗn hợp khi... | [
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865,
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274,
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29875,
29901,
8335,
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10345,
540,
31500,
30103,
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29871,
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29... | [
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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: Đường tròn có tâm I (1; 2), bán kính R = 3 có phương trình là:
A. \[{x^2} + {y^2} + 2x + 4y - 4 = 0;\]
B. \[{x^2} + {y^2} + 2x - 4y - 4 = 0;\]
C. \[{x^2} + {y^2} - 2x + 4y - 4 = 0;\]
D. \[{x^2} + {y^2} - 2x - 4y - 4 = 0.\] Đáp án là: A. \[{x^2} + {y^2} + 2x + 4y - 4 = 0;\] </s> | [
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260,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 17, cho biết Khu kinh tế ven biển Nhơn Hội thuộc tỉnh nào sau đây?
A. Quảng Nam.
B. Khánh Hòa.
C. Bình Định.
D. Phú Yên. Đáp án là: C. Bình Định. </s> | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: Dân cư đô thị của Mĩ Latinh chiếm tới
A. 65% dân số.
B. 75% dân số.
C. 85% dân số.
D. 95% dân số. Đáp án là: B. 75% dân số. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các kim loại Mg, Al, Cu, Fe. Số kim loại bị oxi hóa bởi HNO 3 đặc nguội là
A. 1.
B. 2.
C. 3.
D. 4. Đáp án là: B. 2. </s> | [
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1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một khối thuỷ tinh hình bán cầu tâm O bán kính 20cm, chiết suất n = 1,414. Chiếu chùm tia sáng song song vào toàn bộ mặt phẳng của hình bán cầu theo phương vuông góc với mặt phẳng đó. Góc giới hạn phản xạ toàn phần đối với tia sa... | [
1,
1,
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678,
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29871,
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865,
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29875,
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1251,
31500,
30103,
29875,
266,
8631,... | [
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1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: x = 0 là một nghiệm của bất phương trình nào sau đây?
A. 2x^2 + 3x + 1 < 0;
B. x^2 + x – 3 > 0;
C. x^2 + 2x + 4 < 0;
D. x^2 – 3x – 1 < 0. Đáp án là: D. x^2 – 3x – 1 < 0 </s> | [
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1,
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: Biết \(0 \le x < 100\). Tích các số tự nhiên x là
A. 100;
B. 1;
C. 0;
D. Đáp án khác. Đáp án là: C. 0; </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn lọc tự nhiên làm thay đổi tần số alen trong quần thể bởi vì một số__________ tồn tại và sinh sản thành công hơn.
A. alen
B. locut
C. vốn gen
D. cá thể Đáp án là: D. cá thể </s> | [
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207,
158,
31214,
302,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
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1,
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1,
1,
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: Một ô tô đang chuyển động với vận tốc 15 m/s thì tắt máy, hãm phanh. Tính thời gian và quãng đường ô tô đi được cho tới khi vật dừng hẳn. Hệ số ma sát giữa bánh xe và mặt đường là 0,6. Lấy g = 9, 8 m / s 2
A. 19,1 m.
B. 25,6 m.
C... | [
1,
1,
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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,
4546,
31214,
31500,
29873,
288,
31500,
304,
31500,
29871,
30128,
574,... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Dung dịch AlCl 3 không tác dụng với
A. dung dịch NH 3.
B. dung dịch KOH.
C. dung dịch AgNO 3.
D. dung dịch HNO 3. Đáp án là: D. dung dịch HNO 3 </s> | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
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29871,
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30030,
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325,
31280,
29875,
274,
30057,
29884,
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29875,
29901,
360,
686,
652,
31214,
305,
838,
6821,
29871,
29941,
413,
1251,
3150... | [
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1,
1,
1,
1,
1... |
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