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<s> Chọn đáp án đúng với câu hỏi: I was shocked to learn that someone ______ bad rumours about me.
A. made up
B. looked at
C. went down
D. kept off Đáp án là: A. made up </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The phrase “do this” in the first paragraph mostly means ______.
A. expose foods to sun and wind
B. remove moisture from foods
C. produce pemmican
D. moisten foods Đáp án là: B. remove moisture from foods </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word whose main stress is placed differently from the others in each group
A. environment
B. understanding
C. population
D. conservation Đáp án là: A. environment </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quan sát những người thợ hàn điện, khi làm việc họ thường dùng mặt nạ có tấm kính để che mặt. Họ làm như vậy là để
A. tránh làm cho da tiếp xúc trực tiếp với tia tử ngoại và chống lóa mắt.
B. chống bức xạ nhiệt làm hỏng... | [
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<s> Chọn đáp án đúng với câu hỏi: I didn’t think his the comments were very appropriate at the time.
A. correct
B. right
C. exact
D. suitable Đáp án là: D. suitable </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 22, cho biết phát biểu nào sau đây không đúng về công nghiệp năng lượng của nước ta?
A. Nhà máy thủy điện Hòa Bình nằm trên sông Đà.
B. Các nhà máy nhiệt điện tập trung ở miền Trung.
C. Đườ... | [
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<s> Chọn đáp án đúng với câu hỏi: Số vôn ghi trên mỗi bóng đèn hoặc trên mỗi dụng cụ điện có ý nghĩa gì?
A. Là giá trị của hiệu điện thế giữa hai đầu dụng cụ đó khi có dòng điện chạy qua chúng
B. Là giá trị của hiệu điện thế nhỏ nhất được phép đặt vào hai ... | [
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<s> Chọn đáp án đúng với câu hỏi: I should leave here. I don’t want to _________ my welcome.
A. give up
B. go off
C. run down
D. wear out Đáp án là: D. wear out </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong đoạn trích Hai cây phong, khi mây đen kéo đến cùng với bão dông xô gãy cành, tỉa trụi lá, hai cây phong được ví với hình ảnh nào?
A. Như một đốm lửa vô hình.
B. Những ngọn hải đăng trên núi.
C. Như một làn sóng thuỷ triều.
D. Nh... | [
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<s> Chọn đáp án đúng với câu hỏi: Tỉnh duy nhất thuộc vùng Trung du và miền núi Bắc Bộ nằm trong vùng kinh tế trọng điểm phía Bắc (năm 2007) là
A. Vĩnh Phúc.
B. Bắc Ninh.
C. Quảng Ninh.
D. Phú Thọ. Đáp án là: C. Quảng Ninh. </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 whose underlined part differs from the other three in pronunciation in each of the following questions.
A. fl o ra
B. tr o phy
C. gl o ry
D. o rally Đáp án là: B. tr o phy </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây thuộc loại chất điện li yếu?
A. HCl.
B. NaCl.
C. HF.
D. KOH. Đáp án là: C. HF. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the best option to complete these following sentences I don’t like watching boxing matches on TV because they are _____
A. violent
B. violence
C. exciting
D. interesting Đáp án là: A. violent </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm khẳng định sai
A. ∫(f(x)+g(x))dx=∫f(x)dx+∫g(x)dx.
B..∫abf(x)dx=∫acf(x)dx+∫cbf(x)dx,a<c<b
C. ∫f(x)g(x)dx=∫f(x)dx.∫g(x)dx.
D. ∫f^'(x)dx=f(x)+c. Đáp án là: C. ∫f(x)g(x)dx=∫f(x)dx.∫g(x)dx. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Về nguồn gốc, hệ sinh thái được phân thành các kiểu
A. hệ sinh thái tự nhiên và nhân tạo
B. hệ sinh thái trên cạn và dưới nước
C. hệ sinh thái rừng và biển.
D. hệ sinh thái lục địa và đại dương Đáp án là: A. hệ sinh thái tự nh... | [
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<s> Chọn đáp án đúng với câu hỏi: Một tế bào trứng của một loài đơn tính giao phối được thụ tinh trong ống nghiệm, khi hợp tử nguyên phân đến giai đoạn 8 phôi bào người ta tách các phôi bào và cho phát triển riêng rẽ. Các phôi bào được kích thích để phát triển... | [
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534... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các hình vẽ sau, hình vẽ nào biểu diễn đúng hướng của véc tơ cảm ứng từ tại tâm vòng dây của dòng điện trong vòng dây tròn mang dòng điện:
A.
B.
C.
D. Đáp án là: C. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “ Please speak up a bit more, Jason. You’re hardly loud enough to be heard from the back”, the teacher said.
A. visible
B. edible
C. eligible
D. inaudible Đáp án là: D. inaudible </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số dân của châu Á năm 2020 là bao nhiêu?
A. 4641,2 triệu người.
B. 4641,1 triệu người.
C. 4461,1 triệu người.
D. 4461,2 triệu người. Đáp án là: B. 4641,1 triệu người. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nào sau đây không đúng khi Phan Châu Trinh tỏ ra là một nhà diễn thuyết?
A. Có tài hùng biện
B. Có tư tưởng sâu sắc
C. Có tâm hồn lãng mạn
D. Có cảm xúc nồng nhiệt Đáp án là: C. Có tâm hồn lãng mạn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu sai. Nhiệt kế thủy ngân dùng để đo
A. nhiệt độ của lò luyện kim đang hoạt động.
B. nhiệt độ của nước đá đang tan.
C. nhiệt độ khí quyển.
D. nhiệt độ cơ thể. Đáp án là: A. nhiệt độ của lò luyện kim đang hoạt động. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tỉ trọng khu vực dịch vụ trong GDP của Hoa Kì năm 2004 là:
A. 62,1 %.
B. 79,4 %.
C. 80,5 %.
D. 86,7 %. Đáp án là: B. 79,4 %. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hình thức khởi nghĩa chống lại ách thống trị của Mĩ - Diệm đã diễn ra đầu tiên ở đâu?
A. Bến Tre.
B. Bình Định, Ninh Thuận.
C. Quảng Ngãi.
D. Tây Ninh. Đáp án là: B. Bình Định, Ninh Thuận. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I am more confident in class whenever I prepare for the lesson carefully.
A. The more carefully I prepare for the lesson, the more confident I am in class.
B. The more and more confident in class I am, the more and more carefully I prepare for the lesson.
C. The more confident I am in ... | [
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363,
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<s> Chọn đáp án đúng với câu hỏi: Khi tăng hiệu điện thế của một ống tia X lên n lần (n > 1), thì bước sóng cực tiểu của tia X mà ống phát ra giảm một lượng ∆λ. Bỏ qua tốc độ e bứt ra từ catot. Hiệu điện thế ban đầu của ống là
A. h c ( n − 1 ) e Δ λ
B. h c ( n − 1... | [
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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 OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question: Think about the interviewer’s comments because they may help you prepare better when you are called for the next job inter... | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là không đúng?
A. Đối với vật liệu siêu dẫn, để có dòng điện chạy trong mạch ta luôn phải duy trì một hiệu điện thế trong mạch
B. Điện trở của vật siêu dẫn bằng không
C. Đối với vật liệu siêu dẫn, có ... | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch các muối NH 4 Cl (1), C 6 H 5 NH 3 Cl (2), (CH 3 ) 2 NH 2 Cl (3), CH 3 NH 3 Cl (4) có giá trị pH sắp xếp theo chiều tăng dần là:
A. (1), (2), (3), (4).
B. (3), (2), (4), (1).
C. (2), (1), (4), (3).
D. (4), (1), (3), (2). Đáp án là: C. (2), (1), (4), (3). </s> | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
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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: Cho sơ đồ chuyển hóa: F e ( N O 3 ) 3 → t o X ( + C O, t o ) → Y ( + F e C l 3 ) → Z ( + T ) → F e ( N O 3 ) 3 Các chất X và T lần lượt là
A. FeO; dung dịch NaNO 3.
B. Fe 2 O 3 ; dung dịch Cu(NO 3 ) 2.
C. FeO; dung dịch AgNO 3.
D. Fe 2 O 3 ; dung dịch AgNO 3. Đáp án... | [
1,
1,
29871,
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29871,
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1715,
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865,
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14542,
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521,
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1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: At one (3) paper was in short supply and was used mainly for important documents, but more recently, growing economies and new technologies have (4) a dramatic increase in the amount of paper used.
A. time
B. instance
C. date
D. occasion Đáp án là: A. time </s> | [
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1,
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29976,
29886,
29871,
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865,
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274,
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29901,
2180,
697,
313,
29941,
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5650,
471,
297,
3273,
11421,
322,
471... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một đoạn mạch tiêu thụ có công suất 200 W, trong 10 phút nó tiêu thụ một năng lượng
A. 2000 J
B. 5 J
C. 120 kJ
D. 10 kJ Đáp án là: C. 120 kJ </s> | [
1,
1,
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29876,
29871,
30128,
29976,
29886,
29871,
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31... | [
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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: The word “showcase” in paragraph 3 is closest in meaning to ______.
A. betray
B. hang
C. conceal
D. present Đáp án là: D. present </s> | [
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1,
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: I wish you____________ me a new one instead of having it____________ as you did.
A. would give / to repair
B. gave / to repair
C. had given / to be repaired
D. had given / repaired Đáp án là: A. would give / to repair </s> | [
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306,
6398,
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592,
263,
716,
697,
2012,
310,
2534,
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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: Lựa chọn đáp án đúng nhất:Số trung bình cộng của ba số là 59,48. Biết số thứ nhất là 78,15 và hơn số thứ hai là 20,65. Vậy số thứ ba là:
A. 42,78
B. 42,79
C. 43,78
D. 43,79 Đáp án là: B. 42,79 </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một đoạn mạch ARN có trình tự các nuclêôíit được tổng hợp từ mạch 2 của đoạn gen như sau: - A - X - U - G - X - U - U - G – Trình tự sắp xếp các nuclêôtit của đoạn gen đó ở mạch 1 sẽ là
A. - T - G - A - X - G - A - A - X-
B. - U - G - A- X-G-A... | [
1,
1,
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865,
325,
31280,
29875,
274,
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29884,
298,
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190,
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29875,
29901,
4546,
31214,
31500,
29873,
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30128,
19807,
31214,
29876,
611,
31... | [
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,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Sản phẩm đầu tiên trong pha tối của quang hợp ở thực vật C3 là gì?
A. PAG
B. PEP
C. APG
D. RiDP Đáp án là: C. APG </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: It’s not fair to put all the blame on him. He’s not the only one at fault.
A. He doesn't deserve to be blamed for everything as there were others involved.
B. He deserved to be punished, but the others don’t.
C. It wouldn't be right to punish those who, like him, were not involved.
D. ... | [
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739,
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1925,
599,
278,
1999,
420,
373,
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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: Thành phần của Tân Việt Cách mạng đảng bao gồm:
A. Tiểu tư sản trí thức.
B. Học sinh, sinh viên.
C. Trí thức và tư sản dân tộc.
D. Trí thức và thanh niên tiểu tư sản. Đáp án là: D. Trí thức và thanh niên tiểu tư sản </s> | [
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một người quan sát sóng trên mặt hồ thấy có 5 ngọn sóng truyền qua trước mặt trong 8 s. Chu kì truyền sóng trên mặt nước là:
A. 1,6 s.
B. 1,5 s.
C. 2 s.
D. 1s. Đáp án là: C. 2 s. </s> | [
1,
1,
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1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Có 5 lọ mất nhãn đựng 5 chất bột màu trắng: NaCl, Na 2 CO 3, Na 2 SO 4, BaCO 3, BaSO 4. Chỉ dùng nước và khí CO 2 thì có thể nhận được mấy chất?
A. 2.
B. 3.
C. 4.
D. 5 Đáp án là: D. 5 </s> | [
1,
1,
29871,
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30975,
29876,
29871,
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29886,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: He felt sadly when he heard the news of his father's death.
A. sadly
B. heard
C. news
D. father’s death Đáp án là: A. sadly </s> | [
1,
1,
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940,
7091,
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368,
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540,
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278,
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310,
670,
4783,
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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: Sự kết tinh muối khoáng và các chất khác trong nước tiểu sẽ gây ra bệnh gì?
A. Viêm thận
B. Sỏi thận
C. Nhiễm trùng thận
D. Cả A và B Đáp án là: B. Sỏi thận </s> | [
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1,
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1,
1,
1,
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1,
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1,
1,
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC có độ dài các cạnh AB = 4cm, AC = 5cm, BC = 5cm. Tìm góc lớn nhất của tam giác
A. Góc A
B. Góc B
C. Góc C
D. Góc B và góc A Đáp án là: D. Góc B và góc A </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho iso -pentan tác dụng với Cl 2 theo tỉ lệ số mol 1 : 1, số sản phẩm monoclo tối đa thu được là:
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: Trong các cấu hình electron dưới đây cấu hình không đúng là
A. 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6
B. 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 5 4 s 2
C. 1 s 2 2 s 2 2 p 6 3 s 2 3 p 5 4 s 2
D. 1 s 2 2 s 2 2 p 6 3 s 2 Đáp án là: C. 1 s 2 2 s 2 2 p 6 3 s 2 3 p 5 4 s 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: You need to make _____________ about what course you should take at university.
A. a decision
B. a fortune
C. a guess
D. an impression Đáp án là: A. a decision </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sau năm 1975 tình hình miền Nam có điểm gì nổi bật?
A. Tàn dư của chiến tranh, chế độ thực dân mới còn tồn tại nặng nề
B. Tàn dư của chế độ thực dân cũ còn nặng nề, công nhân thất nghiệp
C. Chính quyền cũ chỉ mới bị xóa ... | [
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<s> Chọn đáp án đúng với câu hỏi: Ngày 2 - 3 - 1946, Quốc hội họp phiên đầu tiên đã nêu lên vấn đề gì?
A. Lập ra dự thảo hiến pháp đầu tiên của nước ta.
B. Xác nhận thành tích của Chính phủ lâm thời trong những ngày đầu nước Việt Nam Dân chủ Cộng hòa.
C. Thông... | [
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<s> Chọn đáp án đúng với câu hỏi: Lưu vực của một con sông là:
A. Vùng hạ lưu của sông.
B. Diện tích đất đai cung cấp nước thường xuyên.
C. Vùng đất đai đầu nguồn.
D. Chiều dài từ nguồn đến cửa sông. Đáp án là: B. Diện tích đất đai cung cấp nước thường xuyên. ... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mặt phẳng tọa độ Oxy, cho hai điểm M(–1; –2) và N(–3; 2). Tọa độ trung điểm I của đoạn thẳng MN là:
A. I(1; –2);
B. I(2; 2);
C. I(–2; 0);
D. I(–4; 0). Đáp án là: C. I(–2; 0); </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Từ nửa sau những năm 80 của thế kỷ XX, Nhật Bản đã:
A. trở thành siêu cường tài chính số một thế giới, là chủ nợ lớn nhất thế giới
B. trở thành nền kinh tế đứng đầu châu Á và là chủ nợ lớn thứ hai thế giới (sau Mĩ)
... | [
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<s> Chọn đáp án đúng với câu hỏi: Cuối thế kỉ XIX - đầu thế kỉ XX, ở Nhật Bản, quá trình tập trung tư bản và tập trung sản xuất, đưa tới sự xuất hiện của các
A. công trường thủ công.
B. tổ chức phường hội.
C. công ty độc quyền.
D. tổ chức thương hội. Đáp... | [
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<s> Chọn đáp án đúng với câu hỏi: Điều nào dưới đây không đúng?
A. Có thể dùng insullin của bò thay thế cho người.
B. Insullin do tuyến tụy tiết ra có tác dụng hạ đường huyết.
C. Hoocmon có hoạt tính sinh học rất cao.
D. Hoocmon theo máu đi khắp cơ thể nên ảnh hưởng đe... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho V lít (đktc) hỗn hợp N 2 và H 2 có tỉ lệ mol 1:4 vào bình kín và đun nóng. Sau phản ứng thu được 1,5 mol NH 3. Biết hiệu suất phản ứng là H= 25%. Giá trị của V là:
A. 42 lít
B. 268,8 lít
C. 336 lít
D. 448 lít Đáp án là: C. 336 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: As the old silent films were being replaced by spoken ones on the screen, a new cinema form appeared, the musical cinema.
A. sounded
B. arose
C. seemed
D. emerged Đáp án là: B. arose </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận định nào sau đây đúng với vùng đặc quyền kinh tế?
A. Tiếp giáp với bờ biển, ở phía trong đường cơ sở.
B. Chiều rộng 12 hải lí tính từ đường cơ sở ra biển.
C. Nằm ngoài lãnh hải và có chiều rộng là 200 hải lí.
D. Tiế... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi đoàn tàu đang chuyển động trên đường nằm ngang thì áp lực có độ lớn bằng lực nào?
A. Lực kéo do đầu tàu tác dụng lên toa tàu
B. Trọng lực của tàu
C. Lực ma sát giữa tàu và đường ray
D. Cả ba lực trên Đáp án là: B. Trọng lực ... | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận thấy sự suy sụp và bất lực của triều đình nhà Lê, năm 1527, Mạc Đăng Dung đã
A. ép vua Lê nhường ngôi, lập ra Vương triều Mạc.
B. cùng vua Lê Cung Hoàng củng cố lại triều đình.
C. tiến hành khởi nghĩa lật đổ nhà Lê, lập ra... | [
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<s> Chọn đáp án đúng với câu hỏi: Trước cách mạng, xã hội Pháp gồm những giai cấp nào?
A. Qúy tộc, tăng lữ, nông dân.
B. Quý tộc, tăng lữ, đẳng cấp thứ ba.
C. Quý tộc, tăng lữ, tư sản.
D. Tư sản, nông dân, các tầng lớp khác. Đáp án là: B. Quý tộc, tăng lữ, đă... | [
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<s> Chọn đáp án đúng với câu hỏi: Xét một tia sáng truyền từ không khí vào nước, gọi i và r là góc tới và góc khúc xạ. Điều nào sau đây là SAI?
A. I > r
B. Khi i tăng thì r cũng tăng
C. Khi i tăng thì r giảm
D. Khi i = 0 0 thì r = 0 0 Đáp án là: D. Khi i = 0 0 thì r = 0 0 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các trường hợp nào sau đây vật không có thế năng hấp dẫn (nếu chọn mốc tính thế năng tại mặt đất)?
A. Quả nặng của búa máy được treo trên cần cẩu của búa máy.
B. Một chiếc ô tô đang chạy trên đường nằm ngang.
C. Nước nă... | [
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<s> Chọn đáp án đúng với câu hỏi: Trạng thái dừng là:
A. trạng thái ổn định của hệ thống nguyên tử.
B. trạng thái êlectron không chuyển động quanh hạt nhân.
C. trạng thái đứng yên của nguyên tử.
D. trạng thái hạt nhân không dao động. Đáp án là: A. trạng thái ổn định của... | [
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<s> Chọn đáp án đúng với câu hỏi: If it hadn’t been for the wind, the fire would never have spread so fast
A. Even without the wind, the fire would have spread just as fast.
B. It was the wind that caused the fire to spread at such a speed.
C. Had there been a wind, the wind would have spread even faster.
D. The force ... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi elêctrôn ở quỹ đạo dừng thứ n thì năng lượng của nguyên tử hiđrô được xác định bởi E n = -13,6/n2 (eV). Một đám khí hiđrô hấp thụ năng lượng chuyển lên trạng thái dừng có năng lượng cao nhất là E 3 (ứng với quỹ đạo M). Tỉ... | [
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<s> Chọn đáp án đúng với câu hỏi: Một bức tường hình vuông có độ dài cạnh 8m. Người ta dùng một sợi dây ngắn các bóng đèn để trang trí một vòng xung quanh bức tường. Chiều dài của sợi dây là:
A. 32 m
B. 16 m
C. 64 m
D. 40 m Đáp án là: A. 32 m </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số thích hợp để viết vào chỗ chấm của 3m4dm =.......... m là:
A. 0,34
B. 3,4
C. 34
D. 340 Đáp án là: B. 3,4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Để khử mùi tanh của cá (gây ra do một số amin) nên rửa cá với?
A. nước muối
B. giấm ăn
C. nước
D. cồn Đáp án là: B. giấm ăn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngọn núi cao nhất ở Trường Sơn Nam là
A. Vọng Phu.
B. Ngọc Linh.
C. Chư Yang Sin.
D. Ngọc Krinh. Đáp án là: B. Ngọc Linh. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho đa giác 9 cạnh, số đường chéo của đa giác đó là:
A. 36
B. 27
C. 20
D. 18 Đáp án là: B. 27 </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Everyone in both cars________injured in the accident last night, ________?
A. was/weren’t they
B. were/ weren’t they
C. was/ wasn’t he
D. were/ were they Đáp án là: D. were/ were they </s> | [
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29871,
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29901,
7569,
650,
297,
1716,
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14365,
262,
29926,
2955,
297,
278,
114... | [
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1,
1,
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1,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: You are in this mess right now because you didn’t listen to me in the first place.
A. If you listened to my advice in the first place, you wouldn’t be in this mess right now.
B. If you had listened to my advice in the first place, you wouldn’t be in this mess right now.
C. If you liste... | [
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29901,
887,
526,
297,
445,
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366,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng với việc phát triển thủy điện ở Trung du và miền núi Bắc Bộ?
A. Các sông suối có trữ năng thủy điện khá lớn.
B. Các nhà máy điện công suất lớn đã xây sựng trên các sông chính.
C. Nhiều nhà ma... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
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29875,
29901,
1963,
29874,
30103,
29873,
289,
347,
31500,
207,
140,
29884,
1055,
... | [
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Khu vực Tây Nam Á không giáp với vùng biển nào sau đây?
A. Biển Đen.
B. Biển Đông.
C. Biển Đỏ.
D. Biển Ca-xpi. Đáp án là: B. Biển Đông. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho biết của một số là 375. Vậy 80% của số đó là bao nhiêu?
A. 180
B. 625
C. 500
D. 550 Đáp án là: A. 180 </s> | [
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269,... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong các mệnh đề sau, mệnh đề nào sai?
A. Khối tứ diện là khối đa diện lồi
B. Khối hộp là khối đa diện lồi
C. Lắp ghép hai khối hộp sẽ được một khối đa diện lồi
D. Khối lăng trụ tam giác là khối đa diện lồi Đáp án là: C. Lắp ghép hai khối hộp sẽ được một khối đa diện lồi </s> | [
1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: I’ve been studying very hard for my final exams but I always feel _______________.
A. tired
B. calm
C. worried
D. frustrated Đáp án là: C. worried </s> | [
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306,
30010,
345,
1063,
23382,
1407,
2898,
363,
590,
2186,
429,
2232... | [
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1,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đầu tháng 8-1975, 35 nước châu Âu cùng với những nước nào kí kết Định ước Henxinki?
A. Mĩ và Liên Xô.
B. Mĩ và Pháp,
C. Mĩ và Anh.
D. Mĩ và Canada. Đáp án là: D. Mĩ và Canada </s> | [
1,
1,
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30128,
29976,
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1,
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Tiến hành các thí nghiệm sau : (a) Cho Mg vào dung dịch Fe 2 (SO 4 ) 3 dư (b) Dẫn khí CO dư qua bột MgO nung nóng (c) Cho dung dịch AgNO 3 tác dụng với dung dịch Fe(NO 3 ) 2 dư (d) Cho Na vào dung dịch MgSO 4 (e) Nhiệt phân Hg(NO 3 ) 2 (g) Đốt Ag 2 S tron... | [
1,
1,
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678,
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447,
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30103,... | [
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1,
1,
1,
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 correct answer to each of the following questions. I wish I_________you tomorrow, but it’s impossible.
A. can see
B. could see
C. saw
D. would see Đáp án là: B. could see </s> | [
1,
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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,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các số: 1,2323; –1,3345; 1,456; 1,(3). Số đối của các số nào sau đây là lớn nhất?
A. 1,3345;
B. –1,456;
C. –1,2323;
D. –1,3345. Đáp án là: A. 1,3345; </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
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29875,
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274,
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269,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: People all over the world are worried (3) ______ things that are happening to the environment.
A. with
B. about
C. of
D. by Đáp án là: B. about </s> | [
1,
1,
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29901,
11647,
599,
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278,
3186,
526,
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1255,
313,
29941,
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903... | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hai dây dẫn làm bằng đồng, cùng tiết diện. Dây thứ nhất có điện trở bằng 0,5 Ω và có chiều dài bằng 1,5 m. Biết dây thứ hai dài 4,5 m tính điện trở của dây thứ hai.
A. 0,8 Ω.
B. 0,6 Ω.
C. 1,5 Ω.
D. 0,4 Ω. Đáp án là: C. 1,5 Ω. </s> | [
1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một gen được tách từ hệ gen của vi khuẩn có %A=20%. Trên phân tử mARN tổng hợp từ gen này có % U m = 15 %, % G m = 25 %, X m = 490 nuclêôtit. Xác định số liên kết hidro của gen.
A. 3640 liên kết.
B. 4630 liên kết
C. 3460 liên kết
D. 4360 lie... | [
1,
1,
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29871,
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865,
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29875,
29901,
4546,
31214,
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2531,
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30128,
29884,
207,
158,
29877... | [
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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: Vào mùa đông, đi trước gió mùa đông bắc (khối khí hậu ôn đới lục địa Pc) đem không khí lạnh tràn vào nước ta là
A. bề mặt tiếp xúc giữa khối khí cực và khối khí ôn đới (frông địa cực FA).
B. bề mặt tiếp xúc giữa khối khi... | [
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<s> Chọn đáp án đúng với câu hỏi: It’s time for me to start to think about the job I will do in the future.
A. I should start to think about the job I will do in the future.
B. I may start to think about the job I will do in the future.
C. I needn’t start to think about the job I will do in the future.
D. I must have s... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nuôi cấy hạt phấn hay noãn chưa thụ tinh trong môi trường nhân tạo có thể mọc thành
A. cây trồng đa bội hóa để có dạng hữu thụ
B. các cây đơn bội
C. cây trồng mới do đột biến NST
D. các giống cây trồng thuần chủng Đáp án là: D... | [
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<s> Chọn đáp án đúng với câu hỏi: Từ láy có độ dài tối thiểu là mấy tiếng, tối đa là mấy tiếng?
A. Tối thiểu 1 tiếng, tối đa 3 tiếng
B. Tối thiểu 1 tiếng, tối đa 4 tiếng
C. Tối thiểu 2 tiếng, tối đa 3 tiếng
D. Tối thiểu 2 tiếng, tối đa 4 tiếng Đáp án là: D.... | [
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<s> Chọn đáp án đúng với câu hỏi: Một máy biến áp cuộn sơ cấp gồm 1100 vòng mắc vào mạng điện xoay chiều 220 (V) và cuộn thứ cấp để lấy ra điện áp 15 (V). Nếu ở cuộn thứ cấp có 15 vòng dây bị quấn ngược thì tổng số vòng dây của cuộn thứ cấp là bao nh... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Tập hợp các điểm biểu diễn số phức z thỏa mãn |z-1+i| = 2 là đường tròn có tâm và bán kính lần lượt là
A. I(-1;1), R = 4
B. I(-1;1), R = 2
C. I(1;-1), R = 2
D. I(1;-1), R = 4 Đáp án là: C. I(1;-1), R = 2 </s> | [
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1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một gen có cấu trúc dài 0,306μm. Do đột biến thay thế một cặp nuclêôtit này bằng một cặp nuclêôtit khác tại vị trí nuclêôtit thứ 360 đã làm cho mã bộ ba tại đây trở thành mã không quy định axit amin nào. Hãy cho biết phân tử prôt... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn một amin X thu được 3,08 g CO 2 và 0,99 g H 2 O và 336 ml N 2 (ở đktc). Để trung hoà 0,1 mol X cần dùng 600 ml HCl 0,5M. Công thức phân tử của X là
A. C 7 H 11 N
B. C 7 H 8 NH 2
C. C 7 H 11 N 3
D. C 8 H 9 NH 2 Đáp án là: C. C 7 H 11 N 3 </... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một vật rơi tự do, trong giây cuối cùng vật rơi được quãng đường bằng 45m. Lấy. Thời gian rơi của vật là
A. 3 s
B. 4 s
C. 5 s
D. 6 s Đáp án là: C. 5 s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: If you had told me about the problem, I ____________.
A. had helped you
B. would help you
C. helped you
D. would have helped you Đáp án là: D. would have helped you </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hoà tan hoàn toàn m gam hỗn hợp X gồm Ca, CuO, MgO và Fe 2 O 3 vào 800 ml dung dịch HCl 1M thu được dung dịch X. Chia dung dịch X thành hai phần bằng nhau, phần 1 thực hiện quá trình điện phân với điện cực trơ, màng ngăn xốp, cho tới khi kh... | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Bệnh mù màu đỏ, lục và bệnh máu khó đông là do 2 gen lặn không alen m và h trên NST X quy định, các len bình thường tương ứng là M và H. Người phụ nữ bình thường kết hôn với người đàn ông không bị bệnh mù màu nhưng bị máu khó ... | [
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1,
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong những năm 1945 - 2000, tổ chức nào sau đây được thành lập ở Tây Âu?
A. Liên minh vì tiến bộ.
B. Cộng đồng châu Âu (EC).
C. Hội đồng tương trợ kinh tế (SEV).
D. Tổ chức Hiệp ước Vácxava. Đáp án là: B. Cộng đồng châu Âu (EC).... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các phát biểu sau: (a) Điện phân dung dịch NaCl (điện cực trơ) có màng ngăn, thu được khí H 2 ở anot. (b) Cho CO dư qua hỗn hợp Al 2 O 3 và CuO đun nóng, thu được Al và Cu. (c) Hỗn hợp Fe 2 O 3 và Cu (tỉ lệ mol tương ứng 1 : 2) tan hoàn... | [
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29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
14542,
5777,
30103,
29883,
1374,
29874,
30103,
29873,
289,
347,
31500... | [
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: Ý nào sau đây ĐÚNG khi nói về giá trị của tác phẩm?
A. Là một kiệt tác trong văn xuôi Việt Nam hiện đại, khẳng định được tài năng của tác giả
B. Là một truyện ngắn có giá trị hiện thực sâu sắc, mới mẻ
C. Chứng tỏ trình độ n... | [
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,
612,
30103,
1055,
30712,
29877,
12507,
29871,
30128,
29874,
31500,
29... | [
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: The boy _____ having had anything to do with the break-in.
A. refused
B. denied
C. objected
D. rejected Đáp án là: B. denied </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,
8023,
903,
7652,
2534,
750,
3099,
304,
437,
411,
278,
2867,
... | [
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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1,
1,
1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Ở một loài động vật, cho biết mỗi gen qui định một tính trạng, gen trội là trội hoàn toàn, trong quá trình giảm phân đã xảy ra hoán vị gen ở cả hai giới tính với tần số như nhau. Xét phép lai thu đươc F 1 có tỉ lệ kiểu hình lặn... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
438,
207,
158,
207,
140,
2730,
31214,
31500,
29873,
658,
29874,
307... | [
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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