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VTSNLP
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preprocess_MCQ

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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to complete the sentences with given words You/ will/ receive/ discount/ every/ five parcels. A. You will receiving discount for every five parcels. B. You will to receive discount for every five parcels. C. You will receive discount for every five parcels. D. You will be receive discount for every five parcels. Đáp án là: C. You will receive discount for every five parcels. </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 nhà máy thủy điện Tuyên Quang nằm trên sông nào sau đây? A. Sông Đà. B. Sông Cả. C. Sông Chu. D. Sông Gâm. Đáp án là: D. Sông Gâm </s>
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<s> Chọn đáp án đúng với câu hỏi: Một AO chỉ chứa tối đa A. 1 electron. B. 2 electron. C. 3 electron. D. 4 electron. Đáp án là: B. 2 electron. </s>
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<s> Chọn đáp án đúng với câu hỏi: Trên mặt nước tại hai điểm A, B cách nhau 26 cm, người ta đặt hai nguồn đồng bộ, dao động điều hòa theo phương thẳng đứng tạo ra sóng kết hợp với bước sóng 2 cm, coi biên độ sóng không đổi khi truyền sóng. Gọi M là điểm trên mặt nước sao cho MA = 24 cm, và M thuộc đường tròn đường kính AB. Phải dịch B dọc theo phương AB và hướng ra xa A một khoảng nhỏ nhất bao nhiêu để M là cực đại? A. 0,83 cm. B. 9,8 cm. C. 3,8 cm D. 9,47 cm. Đáp án là: B. Phải dịch B dọc theo phương AB và hướng ra xa A một khoảng nhỏ nhất bao nhiêu để M là cực đại?A. 0,83 cm. </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là không đúng? Động năng ban đầu cực đại của e quang điện phụ thuộc vào A. bản chất của kim loại B. tần số của chùm sáng kích thích C. năng lượng của photon trong chùm sáng kích thích D. cường độ của chùm sáng kích thích Đáp án là: D. cường độ của chùm sáng kích thích </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất hữu cơ mạch hở: X là axit no, hai chức; Y và Z là hai ancol không no, đơn chức (M Y > M Z ); T là este của X, Y, Z (chỉ chứa chức este). Đốt cháy hoàn toàn a gam hỗn hợp M gồm Z và T, thu được 0,27 mol C O 2 và 0,18 mol H 2 O. Cho 0,06 mol M phản ứng vừa đủ v ớ i dung dịch NaOH, cô cạn dung dịch sau phản ứng thu được muối khan E và hỗn hợp ancol G. Đốt cháy hoàn toàn E, thu được CO 2, H 2 O và 0,04 mol Na 2 C O 3. Đốt cháy hoàn toàn G, thu được 0,3 mol CO 2. Phần trăm khối lượng của T trong M có giá trị gần nhất với giá trị nào sau đầy? A. 86,40 B. 64,80 C. 88,89 D. 38,80 Đáp án là: C. 88,89 </s>
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<s> Chọn đáp án đúng với câu hỏi: Sara: "How do you feel about his comment?" - Mary: “______.” A. Yes, it's a very good idea. B. I don't think he knew what he was saying. C. I'm afraid I disagree with you. D. If you ask me, I feel tired. Đáp án là: B. I don't think he knew what he was saying. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một viên đạn có khối lượng 14 g bay theo phương ngang với vận tốc 400 m/s xuyên qua tấm gỗ dày 5 cm, sau khi xuyên qua gỗ, đạn có vận tốc 120 m/s. Tính lực cản trung bình của tấm gỗ tác dụng lên viên đạn A. 20384 N. B. 20000 N. C. 10500 N. D. 20500 N. Đáp án là: A. 20384 N. </s>
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<s> Chọn đáp án đúng với câu hỏi: Bill asked his sister __________. A. where would she go the following day B. where you will go tomorrow C. where you would go tomorrow D. where she would go the following day Đáp án là: D. where she would go the following day </s>
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<s> Chọn đáp án đúng với câu hỏi: Một người gõ mạnh búa xuống đường ray xe lửa tại điểm A làm âm thanh truyền đến điểm B cách M là 3050m. Hỏi thời gian truyền âm trong đường ray từ A đến B hết bao lâu, biết vận tốc truyền âm trong đường ray là 6100m/s? A. 0,3s B. 0,5s C. 2,4s D. 1,2s Đáp án là: B. 0,5s </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong hình vẽ sau hình nào chỉ đúng hướng của lực Lorenxơ tác dụng lên electron chuyển động trong từ trường đều: A. Hình A B. Hình B C. Hình C D. Hình D Đáp án là: B. Hình B </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là không đúng? A. Cấu tạo của điốt bán dẫn gồm một lớp tiếp xúc p-n B. Lớp chuyển tiếp p-n dẫn điện tốt theo một chiều từ n sang p C. Tia ca tốt mắt thường không nhìn thấy được D. Độ dẫn điện của chất bán dẫn tăng khi nhiệt độ tăng Đáp án là: D. Độ dẫn điện của chất bán dẫn tăng khi nhiệt độ tăng </s>
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<s> Chọn đáp án đúng với câu hỏi: Tính: (– 66) : (– 11) ta được kết quả là: A.6 B. 11 C.– 6 D.– 11 Đáp án là: A.6 </s>
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<s> Chọn đáp án đúng với câu hỏi: Đâu không phải là sáng tác của nhà văn Ai – ma – tốp? A. Cây phong non trùm khăn đỏ B. Cô bé trùm khăn đỏ C. Người thầy đầu tiên D. Con tàu trắng Đáp án là: B. Cô bé trùm khăn đỏ </s>
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<s> Chọn đáp án đúng với câu hỏi: (0,4 điểm) Củ não sinh tư là một bộ phận của A. não trung gian. B. cầu não. C. hành não. D. não giữa. Đáp án là: D. não giữa </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho bảng số liệu: Cơ cấu dân số theo tuổi của nhật bản qua các năm (Đơn vị: %) Dựa vào bảng số liệu trên, cho biết nhận xét nào sau đây không đúng với đặc điểm dân số Nhật Bản giai đoạn 1950 -2014? A. Năm 2014, Nhật Bản có cơ cấu dân số già B. Tỉ lệ dân số nhóm dưới 15 tuổi giảm liên tục C. Tỉ lệ dân số nhóm 15 -64 tăng liên tục D. Tỉ lệ dân số nhóm trên 65 tuổi tăng liên tục Đáp án là: C. Tỉ lệ dân số nhóm 15 -64 tăng liên tục </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là không đúng? A. Công của lực điện tác dụng lên một điện tích không phụ thuộc vào dạng đường đi của điện tích mà chỉ phụ thuộc vào vị trí điểm đầu và điểm cuối của đoạn đường đi trong điện trường. B. Hiệu điện thế giữa hai điểm trong điện trường là đại lượng đặc trưng cho khả năng sinh công của điện trường làm dịch chuyển điện tích giữa hai điểm đó C. Hiệu điện thế giữa hai điểm trong điện trường là đại lượng đặc trưng cho điện trường tác dụng lực mạnh hay yếu khi đặt điện tích thử tại hai điểm đó D. Điện trường tĩnh là một trường thế Đáp án là: C. Hiệu điện thế giữa hai điểm trong điện trường là đại lượng đặc trưng cho điện trường tác dụng lực mạnh hay yếu khi đặt điện tích thử tại hai điểm đó </s>
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<s> Chọn đáp án đúng với câu hỏi: Bạn An gửi vào ngân hàng số tiền là 10 triệu đồng với kì hạn 3 tháng và lãi suất là 2% mỗi quý. Sau đúng 5 năm An rút cả vốn lẫn lãi ra để mua máy tính xách tay. Hỏi An có thể mua được chiếc máy tính có giá nào dưới đây (biết An chỉ dùng số tiền đó để mua máy và không cần phụ thêm tiền) A. 15 triệu đồng B. 15,4 triệu đồng C. 14,9 triệu đồng D. 14,5 triệu đồng Đáp án là: D. 14,5 triệu đồng </s>
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<s> Chọn đáp án đúng với câu hỏi: Ở sinh vật nhân thực, vật chất di truyền mang thông tin di truyền ở cấp tế bào là: A. mARN B. Nhiễm sắc thể C. Protein D. ADN Đáp án là: B. Nhiễm sắc thể </s>
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<s> Chọn đáp án đúng với câu hỏi: Để tiến hành chiến lược “Chiến tranh đặc biệt” (1961-1965) ở miền Nam Việt Nam, Mỹ đã A. Tăng nhanh lực lượng quân đội Sài Gòn. B. Ồ ạt đưa quân viễn chinh Mỹ vào miền Nam. C. Mở rộng chiến tranh ra toàn Đông Dương. D. Sử dụng chiến thuật “tìm diệt” và “bình định”. Đáp án là: A. Tăng nhanh lực lượng quân đội Sài Gòn. </s>
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<s> Chọn đáp án đúng với câu hỏi: Enzyme là A. chất xúc tác sinh học được tổng hợp trong các tế bào sống, có tác dụng làm giảm năng lượng hoạt hóa, giúp các phản ứng xảy ra được trong điều kiện sinh lí bình thường của cơ thể. B. chất xúc tác hóa học được tổng hợp trong các tế bào sống, có tác dụng làm giảm năng lượng hoạt hóa, giúp các phản ứng xảy ra được trong điều kiện sinh lí bình thường của cơ thể. C. chất xúc tác sinh học được tổng hợp trong các tế bào sống, có tác dụng làm tăng năng lượng hoạt hóa, giúp các phản ứng xảy ra được trong điều kiện sinh lí bình thường của cơ thể. D. chất xúc tác hóa học được tổng hợp trong các tế bào sống, có tác dụng làm tăng năng lượng hoạt hóa, giúp các phản ứng xảy ra được trong điều kiện sinh lí bình thường của cơ thể. Đáp án là: A. chất xúc tác sinh học được tổng hợp trong các tế bào sống, có tác dụng làm giảm năng lượng hoạt hóa, giúp các phản ứng xảy ra được trong điều kiện sinh lí bình thường của cơ thể. </s>
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<s> Chọn đáp án đúng với câu hỏi: Từ nào dưới đây không phải là từ có nghĩa chuyển của từ mắt? A. Mắt biếc B. Mắt na C. Mắt lưới D. Mắt cây Đáp án là: A. Mắt biếc </s>
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<s> Chọn đáp án đúng với câu hỏi: Above all, hobbies offer us a mental escape by taking our minds (33)___________ daily worries A. away B. of C. off D. from Đáp án là: C. off </s>
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<s> Chọn đáp án đúng với câu hỏi: Trộn 5,4 gam A l vói 4,8 gam Fe 2 O 3 rồi thực hiện phản ứng nhiệt nhôm. Sau phản ứng thu được m (gam) chất rắn. Giá trị của m là: A. 100,2 gam B. 4,08 gam C. 2,24 gam D. Kết quả khác A, B, C Đáp án là: D. Kết quả khác A, B, C </s>
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<s> Chọn đáp án đúng với câu hỏi: Nhóm các kim loại nào sau đây đều tác dụng được với nước lạnh tạo dung dịch kiềm A. Na, K, Mg, Ca B. Be, Mg, Ca, Ba C. Ba, Na, K, Ca D. K, Na, Ca, Zn Đáp án là: C. Ba, Na, K, Ca </s>
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<s> Chọn đáp án đúng với câu hỏi: Giá trị của biểu thức 7 805 + 3 246 × 2 là: A. 6 492 B. 10 268 C. 10 536 D. 14 297 Đáp án là: D. 14 297 </s>
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<s> Chọn đáp án đúng với câu hỏi: Ở ruồi giấm, alen A quy định thân xám vượt trội hoàn toàn so với alen a quy định thân đen; alen B quy định cánh dài vượt trội hoàn toàn so với alen b quy định cánh cụt. Alen D quy định mắt đỏ trội hoàn toàn so với alen d quy định mắt trắng. Phép lai P:, thu được F 1. Trong tổng số ruồi F 1, ruồi thân xám, cánh cụt, mắt đỏ chiếm 3,75%. Biết rằng không xảy ra đột biến nhưng xảy ra hoán vị gen trong quá trình phát sinh giao tử cái. Theo lí thuyết, có bao nhiêu phát biểu sau đây đúng? I. F 1 có 28 loại kiểu gen. II. Khoảng cách giữa gen A và gen B là 20cM. III. F 1 có 10% số ruồi đực thân đen, cánh cụt, mắt đỏ. IV. F 1 có 25% số cá thể cái mang kiểu hình trội về hai tính trạng. A. 3. B. 4. C. 1. D. 2. Đáp án là: D. 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Sóng cơ lan truyền qua điểm M rồi đến điểm N cùng nằm trên một phương truyền sóng. Bước sóng bằng 40cm. Khoảng cách MN bằng 90cm. Coi biên độ sóng không đổi trong quá trình truyền sóng. Tại một thời điểm nào đó phần tử vật chất tại M đang có li độ 2cm thì phần tử vật chất tại N có tốc độ 125,6cm/s. Sóng có tần số bằng A. 12Hz B. 18Hz C. 10Hz D. 15Hz Đáp án là: C. 10Hz </s>
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<s> Chọn đáp án đúng với câu hỏi: Chất không có khả năng làm xanh quỳ tím là: A. amoniac. B. kali hiđroxit. C. anilin. D. lysin. Đáp án là: C. anilin. </s>
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<s> Chọn đáp án đúng với câu hỏi: Vật nào sau đây chuyển động theo quán tính? A. Vật chuyển động tròn đều. B. Vật chuyển động trên quỹ đạo thẳng. C. Vật chuyển động thẳng đều. D. Vật chuyển động rơi tự do. Đáp án là: C. Vật chuyển động thẳng đều. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một tụ điện phẳng có điện môi không khí; khoảng cách giữa 2 bản là d = 0,5cm ; diện tích một bản là 36 c m 2. Mắc tụ vào nguồn điện có hiệu điện thế U = 100V. Năng lượng điện trường trong tụ điện là: A. W = 0, 1 π μ J B. W = 1 π μ J C. W = 10 π μ J D. W = 10 2 π μ J Đáp án là: A. W = 0, 1 π μ J </s>
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<s> Chọn đáp án đúng với câu hỏi: Toluen tác dụng với dung dịch KMnO 4 khi đun nóng, thu được sản phẩm hữu cơ là A. C 6 H 5 OK. B. C 6 H 5 CH 2 OH. C. C 6 H 5 CHO. D. C 6 H 5 COOK. Đáp án là: D. C 6 H 5 COOK </s>
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<s> Chọn đáp án đúng với câu hỏi: Tại sao ngày 2-9-1945 Chủ tích Hồ Chí Minh lại đọc bản Tuyên ngôn độc lập, tuyên bố với quốc dân và thế giới nước Việt Nam Dân chủ Cộng hòa được thành lập? A. Để khẳng định tính hợp pháp của chính phủ mới B. Để thay thế nền thống trị của Pháp- Nhật C. Để đáp ứng nguyện vọng của quần chúng nhân dân D. Để sẵn sàng “đón tiếp” quân Đồng minh Đáp án là: A. Để khẳng định tính hợp pháp của chính phủ mới </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất: glixerol, etylen glicol, Gly-Ala-Gly, glucozơ, axit axetic, saccarozơ, anđehit fomic, anilin. Số chất tác dụng được với Cu(OH) 2 (ở điều kiện thích hợp) là A. 7. B. 5. C. 8. D. 6. Đáp án là: A. 7. </s>
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<s> Chọn đáp án đúng với câu hỏi: Điểm du lịch Mũi Né thuộc tỉnh nào của Việt Nam hiện nay? A. Bình Thuận. B. Khánh Hòa. C. Đắk Lắk. D. Kon Tum. Đáp án là: A. Bình Thuận. </s>
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<s> Chọn đáp án đúng với câu hỏi: Read the following passage and mark the letter A, D, C or D on your answer sheet to indicate the best option to complete each of the following numbered blanks. UFO SPOTTED OVER NEWYORK A UFO sighting over New York's Statue of Liberty has gained a YouTube video a lot of attention because people can see the object (Câu 16) ______ over the city. Scott Kensington uploaded the video on December 10, explaining that his wife and sister filmed the UFO (Câu 17) ______ they were visiting New York. They thought that the object was (Câu 18) ______ balloon at first but then the object (Câu 19) ______ made them surprised suddenly stopped moving and hovered in one place. Some people say that the video is proof that aliens exist, while others are convinced that the object is only a solar balloon. UFO expert, Nigel Watson, (Câu 20) ______ a decision to study the video and also believes that the object is just a solar balloon or perhaps a drone taking pictures of landmarks. A. hovered B. hovers C. hovering D. is hovering Đáp án là: C. hovering </s>
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<s> Chọn đáp án đúng với câu hỏi: The student must have her assessment form fill in by the examiner during the oral exam A. must have B. fill in C. during D. oral exam Đáp án là: B. fill in </s>
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<s> Chọn đáp án đúng với câu hỏi: Hợp chất nào dưới đây là monosaccarit? (1) C H 2 O H - ( C H O H ) 4 C H - C H 2 O H (2) C H 2 O H - ( C H O H ) 4 C H = O (3) C H 2 O H - C O - ( C H O H ) 3 C H 2 O H (4) C H 2 O H - ( C H O H ) 4 - C O O H (5) C H 2 O H - ( C H O H ) 3 - C H = O A. (2), (3), (5) B. (1), (2), (3) C. (1), (4), (5) D. (1), (3) Đáp án là: A. (2), (3), (5) </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho các bazơ sau: LiOH, NaOH, KOH, Ca ( OH ) 2, Mg ( OH ) 2, Al ( OH ) 3, Fe ( OH ) 3. Dãy bazơ tan trong nước tạo thành dung dịch kiềm là: A. Ca ( OH ) 2, LiOH, Cu ( OH ) 2, Mg ( OH ) 2 B. Ca ( OH ) 2, KOH, LiOH, NaOH C. KOH, LiOH, NaOH, Al ( OH ) 3 D. Al ( OH ) 3, NaOH, Mg ( OH ) 2, KOH Đáp án là: B. Ca ( OH ) 2, KOH, LiOH, NaOH </s>
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc lò xo gồm vật nặng m = 100 g và lò xo có độ cứng k. Con lắc dao động điều hòa với tần số góc bằng 10 rad/s. Độ cứng k bằng A. 1 N/m. B. 100 N/m. C. 10 N/m. D. 1000 N/m. Đáp án là: C. 10 N/m. </s>
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<s> Chọn đáp án đúng với câu hỏi: Mạch dao động LC gồm tụ C = 200 nF và cuộn thuần cảm L = 2 mH. Biết cường độ dòng điện cực đại trên L là I 0 = 0,5 A. Khi cường độ dòng điện trên L là i = 0,4 A thì hiệu điện thế giữa hai bản tụ là A. 10 V. B. 20 V. C. 30 V. D. 40 V. Đáp án là: A. Khi cường độ dòng điện trên L là i = 0,4 A thì hiệu điện thế giữa hai bản tụ là </s>
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm khí hậu ở nơi có nhiều thực vật (trong rừng) A. Nắng nhiều, gay gắt, độ ẩm cao B. Khô, ánh sáng yếu C. Gió mạnh, nhiệt độ cao D. Ánh sáng yếu, gió yếu, độ ẩm cao Đáp án là: D. Ánh sáng yếu, gió yếu, độ ẩm cao </s>
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<s> Chọn đáp án đúng với câu hỏi: Tia tử ngoại được dùng A. để tìm vết nứt trên bề mặt sản phẩm bằng kim loại. B. trong y tế để chụp điện, chiếu điện. C. để chụp ảnh bề mặt Trái Đất từ vệ tinh. D. để tìm khuyết tật bên trong sản phẩm bằng kim loại. Đáp án là: A. để tìm vết nứt trên bề mặt sản phẩm bằng kim loại. </s>
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<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây không có phản ứng thủy phân? A. Glucozo. B. Xenlulozo. C. Saccarozo. D. Tinh bột. Đáp án là: A. Glucozo. </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(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Herbs and spices are essential for seasoning pasta dishes and pizzas and improving their flavor. A. unnecessary B. plentiful C. vital D. inadequate Đáp án là: A. unnecessary </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong các khẳng định sau số phát biểu nào dưới đây không chính xác? 1. Protein phản ứng với Cu(OH) 2, tạo ra sản phẩm có màu tím đặc trưng. 2. Protein phản ứng với HNO 3 đặc, tạo kết tủa màu vàng. 3. Khi đun nóng dung dịch protein, protein đông tụ. 4. Các protein đều tan trong nước. 5. Cấu trúc bậc I của protein được giữ vững nhờ liên kết peptit. A. 1. B. 2. C. 4. D. 3. Đáp án là: A. 1. </s>
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<s> Chọn đáp án đúng với câu hỏi: Sau Chiến tranh thế giới thứ nhất, các nước phương Tây đã thay đổi chính sách đối với các nước thuộc địa ở Đông Nam Á như thế nào? A. Tăng cường chính sách khai thác và bóc lột thuộc địa B. Đẩy mạnh phát triển kinh tế, chính trị, xã hội C. Hợp tác, giao lưu thúc đẩy kinh tế đối ngoại D. Vơ vét khoáng sản đưa về chính quốc Đáp án là: A. Tăng cường chính sách khai thác và bóc lột thuộc địa </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho 8,5g hỗn hợp hai kim loại kiềm (nằm ở hai chu kỳ liên tiếp) tác dụng với 100g H 2 O thoát ra 3,36 l khí ở (đktc). Xác định tên hai kim loại kiềm? A. Li, Na B. Na, K C. K, Rb D. Li, K Đáp án là: B. Na, K </s>
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<s> Chọn đáp án đúng với câu hỏi: Nghiệm nguyên âm của phương trình 3x + 4y = −10 là (x; y). Tính x.y A. 2 B. −2 C. 6 D. 4 Đáp án là: A. 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Ở một quần thể, xét hai gen nằm trên NST thường: gen quy định nhóm máu có 3 alen với tần số: I A = 0,3; I B = 0,2; I O = 0,5; gen quy định màu mắt có 2 alen: alen M quy định mắt nâu có tần số 0,4 và trội hoàn toàn so với alen m quy định mắt đen. Biết rằng hai gen này phân li độc lập và quần thể đang ở trạng thái cân bằng di truyền. Theo lí thuyết, có bao nhiêu phát biểu sau đây đúng khi nói về quần thể này? I. Người có nhóm máu AB, mắt nâu chiếm tỉ lệ 7,68%. II. Người nhóm máu A, mắt nâu chiếm tỉ lệ lớn nhất. III. Một người nhóm máu B, mắt đen kết hôn với một người nhóm máu AB, mắt nâu. Xác suất cặp vợ chồng này sinh con đầu lòng có nhóm máu A, mắt đen là 5/64. IV. Một cặp vợ chồng đều có nhóm máu B, mắt nâu thì không thể sinh được người con có nhóm máu O, mắt đen. A. 3 B. 1 C. 2 D. 4 Đáp án là: A. 3 </s>
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<s> Chọn đáp án đúng với câu hỏi: Nguyên tắc tổng hợp ADN là A. Bổ sung và bán bảo toàn B. Khuôn mẫu C. Bán bảo toàn D. Đa phân Đáp án là: A. Bổ sung và bán bảo toàn </s>
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<s> Chọn đáp án đúng với câu hỏi: X, Y, Z là 3 este đều đơn chức, mạch hở (trong đó Y và Z không no có một liên kết C=C, M Y < M Z và có tồn tại đồng phân hình học). Đốt cháy 21,62 gam hỗn hợp E chứa X, Y, Z với oxi vừa đủ, sản phẩm cháy dẫn qua dung dịch Ca(OH) 2 dư thấy khối lượng dung dịch giảm 34,5 gam so với trước phản ứng. Mặt khác, đun nóng 21,62 gam E với 300 ml dung dịch NaOH 1M (vừa đủ), thu được hỗn hợp F chỉ chứa 2 muối và hỗn hợp gồm 2 ancol kế tiếp thuộc cùng dãy đồng đẳng. Phần trăm khối lượng của Y có trong E gần nhất với: A. 30%. B. 27%. C. 23% D. 21%. Đáp án là: C. 23% </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng? A. Tinh bột không cho phản ứng tráng gương. B. Tinh bột tan tốt trong nước lạnh. C. Tinh bột cho phản ứng màu với dung dịch iot. D. Tinh bột có phản ứng thủy phân. Đáp án là: B. Tinh bột tan tốt trong nước lạnh. </s>
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<s> Chọn đáp án đúng với câu hỏi: Which best serves as the title for the passage? A. Trust in traditional media increases over the globe. B. Restoring public trust in the media credibility. C. New survey explores media trust crisis in Europe. D. Unreliable narration and transparency in digital journalism. Đáp án là: A. Trust in traditional media increases over the globe. </s>
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<s> Chọn đáp án đúng với câu hỏi: Ở điện thế nghỉ, nồng độ K + và Na + giữa phía trong và phía ngoài màng tế bào như thế nào? A. Ở trong tế bào, K + có nồng độ thấp hơn và Na + có nồng độ cao hơn so với bên ngoài tế bào B. Ở trong tế bào, nồng độ K + và Na + cao hơn so với bên ngoài tế bào C. Ở trong tế bào, K + có nồng độ cao hơn và Na + có nồng độ thấp hơn so với bên ngoài tế bào D. Ở trong tế bào, K + và Na + có nồng độ thấp hơn so với bên ngoài tế bào Đáp án là: C. Ở trong tế bào, K + có nồng độ cao hơn và Na + có nồng độ thấp hơn so với bên ngoài tế bào </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong tự nhiên, con đường hình thành loài nhanh nhất là con đường A. Lai xa và đa bội hoá. B. Sinh thái. C. Địa lí. D. Lai khác dòng. Đáp án là: A. Lai xa và đa bội hoá. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một mạch điện gồm điện trở thuần 10 W mắc giữa hai điểm có hiệu điện thế 20V. Nhiệt lượng toả ra trên R trong thời gian 10s là A. 20J B. 2000J C. 40J D. 400J Đáp án là: D. 400J </s>
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<s> Chọn đáp án đúng với câu hỏi: Đồ thị hàm số y=(√(2−x^2)−1)/(x^2−3x+2) có tất cả bao nhiêu đường tiệm cận? A. 0. B. 1. C. 2. D. 3. Đáp án là: A. 0. </s>
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<s> Chọn đáp án đúng với câu hỏi: Đối với nguyên tử hiđrô, cho biết năng lượng của nguyên tử ở trạng thái dừng dược tính theo công thức E n = -13,6/n 2 (tính bằng eV) với n = 1, 2, 3,.... Khi êlectron chuyển từ trạng thái dừng ứng với n = 4 về trạng thái dừng ứng với n = 1 thì sẽ phát ra bức xạ có tần số A. 2,927.10 14 Hz B. 3,079.10 15 Hz C. 3,284.10 16 Hz D. 4,579.10 14 Hz Đáp án là: B. 3,079.10 15 Hz </s>
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<s> Chọn đáp án đúng với câu hỏi: I often ask my sister to ________ the children while I am away on business. A. look for B. go on C. turn on D. look after Đáp án là: D. look after </s>
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<s> Chọn đáp án đúng với câu hỏi: Theo quan niệm hiện đại, đơn vị tiến hoá cơ sở là? A. Loài B. Quần thể C. Cá thể D. Quần xã Đáp án là: B. Quần thể </s>
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<s> Chọn đáp án đúng với câu hỏi: If you had taken my advice, you _______ _______ in such difficulties now. A. wouldn't be B. hadn't been C. won't be D. wouldn't have been Đáp án là: A. wouldn't be </s>
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<s> Chọn đáp án đúng với câu hỏi: Politicians _______ blame the media if they don't win the election. They're so predictable. A. variety B. various C. invariably D. variable Đáp án là: A. variety </s>
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<s> Chọn đáp án đúng với câu hỏi: Sục từ từ khí CO 2 đến dư vào dung dịch nước vôi trong thì hiện tượng quan sát được là: A. N ước vôi bị v ẩ n đục ngay B. N ước vôi bị đục dần sau đó trong trở lại C. N ước vôi bị đục dần D. N ước vôi vẫn trong Đáp án là: B. N ước vôi bị đục dần sau đó trong trở lại </s>
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hỗn hợp CH 4, C 2 H 6, C 3 H 8 thu được 2,24 lít CO 2 (đktc) và 2,7 gam H 2 O. Thể tích O 2 (đktc) đã tham gia phản ứng cháy là: A. 2,48 lít B. 3,92 lít C. 4,53 lít D. 5,12 lít Đáp án là: B. 3,92 lít </s>
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<s> Chọn đáp án đúng với câu hỏi: Người duy nhất trong lịch sử nước Mĩ trúng cử tổng thống 4 nhiệm kì liên tiếp là A. G.Oa-sinh-tơn. B. F.Ru-dơ-ven. C. B.Clin-tơn. D. A.Lin-côn. Đáp án là: B. F.Ru-dơ-ven. </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 sentence that best completes each of the following exchanges. Student A: ______________ Student B: To protect our homes from criminals. A. What are CCTV Security Systems? B. What do we use CCTV Security Systems for? C. How do we use CCTV Security Systems? D. Why do we use CCTV Security Systems for? Đáp án là: B. What do we use CCTV Security Systems for? </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây đúng: A. Ancol etylic và phenol đều tác dụng với NaOH, Na. B. Phenol và anilin có tính bazơ nên chúng tác dụng với dung dịch Br 2. C. Phenol và anilin đều tác dụng với dung dịch Br 2 và HNO 3. D. Ancol etylic và ancol isopropylic đều bị oxi hoá bởi CuO và tạo ra an đ ehit. Đáp án là: A. Ancol etylic và phenol đều tác dụng với NaOH, Na. </s>
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<s> Chọn đáp án đúng với câu hỏi: Đâu không phải là giá trị nghệ thuật của văn bản? A. Luận điểm chặt chẽ B. Dẫn chứng khoa học C. Từ ngữ trau chuốt, mượt mà D. Lối viết hấp dẫn Đáp án là: C. Từ ngữ trau chuốt, mượt mà </s>
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<s> Chọn đáp án đúng với câu hỏi: Este (X) được tạo thành từ axit axetic và ancol metylic có công thức phân tử là A. C 3 H 6 O 2 B. C 4 H 8 O 2 C. C 2 H 4 O 2 D. C 4 H 10 O 2 Đáp án là: A. C 3 H 6 O 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC có trọng tâm G và điểm I sao cho: IC→−IB→+IA→=0→. Ba điểm nào sau đây thẳng hàng? A. I, G, C; B. I, G, A; C. I, A, B; D. I, G, B. Đáp án là: D. I, G, B </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho các phát biểu sau: (a) Ở nhiệt độ thường, Cu(OH) 2 tan được trong dung dịch glixerol. (b) Ở nhiệt độ thường, C 2 H 4 phản ứng được với nước brom. (c) Đốt cháy hoàn toàn C 2 H 5 OC 2 H 5 thu được số mol CO 2 bằng số mol H 2 O. (d) Glyxin (H 2 NCH 2 COOH) phản ứng được với dung dịch H 2 SO 4. Số phát biểu đúng là: A. 4. B. 3. C. 1. D. 2. Đáp án là: B. 3. </s>
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<s> Chọn đáp án đúng với câu hỏi: Vấn đề cần đặc biệt chú ý trong việc phát triển ngư nghiệp của vùng Bắc Trung Bộ là A. giảm việc khai thác để duy trì trữ lượng thủy sản. B. khai thác hợp lí đi đôi với bảo vệ nguồn lợi thủy sản. C. hạn chế việc nuôi trồng để bảo vệ môi trường ven biển. D. ngừng hẳn việc khai thác ven bờ, đầu tư cho đánh bắt xa bờ. Đáp án là: B. khai thác hợp lí đi đôi với bảo vệ nguồn lợi thủy sản. </s>
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<s> Chọn đáp án đúng với câu hỏi: Dựa vào bảng số liệu một số chỉ số cơ bản của các trung tâm kinh tế hàng đầu thế giới (câu 6), trả lời câu hỏi : Biểu đồ thích hợp nhất thể hiện tỉ trọng xuất khẩu trong GDP của EU, Hoa Kì và Nhật Bản năm 2014 là A. Biểu đồ cột. B. Biểu đồ tròn (3 vòng tròn). C. Biểu đồ đường. D. Biểu đồ miền. Đáp án là: B. Biểu đồ tròn (3 vòng tròn). </s>
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<s> Chọn đáp án đúng với câu hỏi: Đặt vào hai đầu đoạn mạch điện RLC không phân nhánh một điện thế u = 220 2 cos ω t − π 2 V thì cường độ dòng điện qua đoạn mạch có biểu thức i = 2 2 cos ω t − π 4 A. Công suất tiêu thụ của mạch là A. 220 W. B. 440 2 W C. 440 W. D. 220 2 W. Đáp án là: D. 220 2 W </s>
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<s> Chọn đáp án đúng với câu hỏi: Xác định năng lượng liên kết và năng lượng liên kết riêng của hạt T 1 3 biết m T = 3, 016 u, m p = 1, 0073 u, m n = 1, 0087 u? A. W l k = 6, 8 M e V ; W l k r = 2, 27 M e V / n u c l o n B. W l k = 2, 7 M e V ; W l k r = 8, 1 M e V / n u c l o n C. W l k = 8, 1 M e V ; W l k r = 24, 3 M e V / n u c l o n D. W l k = 8, 1 M e V ; W l k r = 2, 7 M e V / n u c l o n Đáp án là: D. W l k = 8, 1 M e V ; W l k r = 2, 7 M e V / n u c l o n </s>
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<s> Chọn đáp án đúng với câu hỏi: Một sóng cơ truyền dọc theo trục Ox có phương trình u = 20 cos 200 π t - 20 x cm, trong đó x là toạ độ được tính bằng mét, t là thời gian được tính bằng giây. Tốc độ truyền sóng có giá trị xấp xỉ là A. 33,1 m/s. B. 31,4 m/s. C. 10,0 m/s. D. 33,4 m/s. Đáp án là: B. 31,4 m/s. </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong quá trình nhân đôi ADN, enzim nối ligaza nối các đoạn nào lại với nhau? A. Exon B. Okazaki C. Intron D. Mồi Đáp án là: B. Okazaki </s>
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<s> Chọn đáp án đúng với câu hỏi: I strongly disapproved of your behavior. However, I will help you this time. A. Despite of my strong disapproval of your behavior, I will help you this time. B. Because of your behavior, I will help you this time. C. Although I strongly disapproved of your behavior, but I will help you this time. D. Despite my strong disapproval of your behavior, I will help you this time. Đáp án là: A. Despite of my strong disapproval of your behavior, I will help you this time. </s>
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<s> Chọn đáp án đúng với câu hỏi: Tại sao lại phải tuốt lá cây đào để chúng nở hoa đúng dịp Tết A. Để có chỗ cho nụ và hoa nở B. Để cây chuyển sang giai đoạn ra hoa C. Để cây không quang hợp D. Để phá ưu thế ngọn Đáp án là: B. Để cây chuyển sang giai đoạn ra hoa </s>
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<s> Chọn đáp án đúng với câu hỏi: Một lực tác dụng lên một vật đang chuyển động không sinh công khi A. Lực và chuyển động cùng phương nhưng ngược chiều. B. Lực và chuyển động cùng phương, cùng chiều nhưng lực cân bằng với một lực khác. C. Lực và chuyển động có phương vuông góc với nhau. D. Cả ba trường hợp trên lực đều không sinh công. Đáp án là: A. Lực và chuyển động cùng phương nhưng ngược chiều. </s>
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn một lượng chất hữu cơ X thu được 3,36 lít khí CO 2, 0,56 lít khí N 2 (các khí đo ở đktc) và 3,15 gam H 2 O. Khi X tác dụng với dung dịch NaOH thu được sản phẩm có muối H 2 N-CH 2 -COONa. Công thức cấu tạo thu gọn của X là (cho H = 1, C = 12, O = 16) A. H 2 N-CH 2 -COO-C 3 H 7 B. H 2 N-CH 2 -COO-CH 3 C. H 2 N-CH 2 -CH 2 -COOH D. H 2 N-CH 2 -COO-C 2 H 5 Đáp án là: B. H 2 N-CH 2 -COO-CH 3 </s>
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<s> Chọn đáp án đúng với câu hỏi: Câu nào sau đây là không đúng? A. Hệ sinh thái là 1 cấu trúc hoàn chỉnh của tự nhiên, là 1 hệ thống mở tự điều chỉnh B. Hệ sinh thái là sự thống nhất của quần xã sinh vật với môi trường mà nó tồn tại C. Các hệ sinh thái nhân tạo có nguồn gốc tự nhiên D. Các hệ sinh thái nhân tạo do con người tạo ra và phục vụ cho mục đích của con người Đáp án là: C. Các hệ sinh thái nhân tạo có nguồn gốc tự nhiên </s>
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<s> Chọn đáp án đúng với câu hỏi: Bộ luật thành văn mang tính dân tộc sâu sắc của chế độ phong kiến Việt Nam là A. Hình luật B. Hình thư C. Hoàng Việt luật lệ D. luật Hồng Đức Đáp án là: D. luật Hồng Đức </s>
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<s> Chọn đáp án đúng với câu hỏi: Xét các khẳng định sau: (I) Nếu hàm số y=f(x) có giá trị cực đại là M và giá trị cực tiểu là m thì M>m(II) Đồ thị hàm số y=ax^4+bx^2+c (a≠0) luôn có ít nhất một điểm cực trị.(III) Tiếp tuyến (nếu có) tại điểm cực trị của đồ thị hàm số luôn song song với trục hoành.Số khẳng định đúng là A. 3 B. 1 C. 0 D. 2 Đáp án là: B. 1 </s>
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu sai. Dòng điện sẽ chạy qua vật dẫn khi: A. Hai đầu vật dẫn có một hiệu điện thế B. Vật dẫn được nối với nguồn điện C. Vật dẫn phải được nối tiếp với khóa K D. Hai đầu vật dẫn phải được mắc với pin Đáp án là: A. Hai đầu vật dẫn có một hiệu điện thế </s>
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<s> Chọn đáp án đúng với câu hỏi: Độ tan của F e B r 2.6 H 2 O ở 20 o C là 115 gam. Khối lượng F e B r 2.6 H 2 O có trong 516 gam dung dịch bão hòa ở nhiệt độ trên là: A. 200 gam B. 276 gam C. 240 gam D. 300 gam Đáp án là: B. 276 gam </s>
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<s> Chọn đáp án đúng với câu hỏi: “They are always arriving late to team meetings.” - “” A. If I were you, I would go there on time. B. Have you thought about talking to them? C. I’m sorry. It won’t happen again. D. You’d better arrive on time. Đáp án là: B. Have you thought about talking to them? </s>
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu đúng trong các câu sau: A. −5,7∈Z B. 9∈N C. −5,7∈Z D. 9∉N Đáp án là: B. 9∈N </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất: Ba, P 2 O 5, ZnO, Cu, SO 2, CaO. Có bao nhiêu chất phản ứng được với nước? A. 6 B. 5 C. 4 D. 3 Đáp án là: C. 4 </s>
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<s> Chọn đáp án đúng với câu hỏi: Từ "người bạn" trong câu “Ngoài ra, trẻ có thể chia sẻ thời thơ ấu của mình với những người bạn tốt nhất của chúng” là ẩn dụ cho cái gì? A. Bạn bè. B. Con vật nuôi. C. Những cuốn sách. D. Gia đình. Đáp án là: B. Con vật nuôi. </s>
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<s> Chọn đáp án đúng với câu hỏi: Tiến hành các thí nghiệm sau (1) Cho Zn vào dung dịch AgNO 3 dư. (2) Cho Fe vào dung dịch Fe 2 (SO 4 ) 3 dư. (3) Cho Na vào dung dịch CuSO 4 dư. (4) Dẫn khí CO (dư) qua bột CuO nóng. Các thí nghiệm có tạo thành kim loại là A. (2) và (3). B. (3) và (4). C. (1) và (2) D. (1) và (4). Đáp án là: D. (1) và (4) </s>
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<s> Chọn đáp án đúng với câu hỏi: Vừa thể hiện tài năng văn học vừa toát lên niềm tự hào dân tộc và yêu nước sâu sắc. Đó là đặc điểm của A. văn hoá, nghệ thuật thế kỉ XI - XIV B. thơ văn các thế kỉ XI - XIV C. thơ, kịch, phú các thế kỉ XI - XIV D. văn học các thế kỉ X - XIV Đáp án là: B. thơ văn các thế kỉ XI - XIV </s>
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm nào sau đây là đặc điểm của môi trường nhân tạo? A. Là kết quả lao động của con người, phụ thuộc vào con người. B. Có mối quan hệ trực tiếp đến sự phát triển của con người. C. Gồm tất cả những gì thuộc về tự nhiên ở xung quanh con người. D. Phát triển theo quy luật tự nhiên, bị tác động của con người. Đáp án là: A. Là kết quả lao động của con người, phụ thuộc vào con người. </s>
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<s> Chọn đáp án đúng với câu hỏi: Your annual wage is the amount of money your employer pays you over the course of a year in exchange for the work you perform A. wage B. employer C. in exchange D. perform Đáp án là: A. wage </s>
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<s> Chọn đáp án đúng với câu hỏi: Chọn từ có phần gạch chân được phát âm khác. A. ch ange B. ar ch itecture C. ch emistry D. me ch anic Đáp án là: A. ch ange </s>
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<s> Chọn đáp án đúng với câu hỏi: Martin Luther King devoted his life to the ____ of voting right for black people. A. effort B. realization C. achievement D. performance Đáp án là: C. achievement </s>
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<s> Chọn đáp án đúng với câu hỏi: Từ ba trong 4 số 5, 6, 3, 0, hãy ghép thành số có ba chữ số khác nhau là số lớn nhất chia hết cho 2 và 5. A. 560 B. 360 C. 630 D. 650 Đáp án là: D. 650 </s>
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<s> Chọn đáp án đúng với câu hỏi: Xen giữa các dãy núi ở vùng phía Tây phần lãnh thổ Hoa Kì ở trung tâm Bắc Mĩ là: A. các thung lũng và đồng bằng B. các sơn nguyên và đồng bằng. C. các cao nguyên và bồn địa D. các bồn địa và vùng trũng Đáp án là: C. các cao nguyên và bồn địa </s>
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<s> Chọn đáp án đúng với câu hỏi: Mĩ lôi kéo các nước Mĩ Latinh tham gia vào tổ chức Liên minh vì tiến bộ nhằm ngăn chặn ảnh hưởng của A. cách mạng Mêhicô. B. cách mạng Êcuađo. C. cách mạng Cuba. D. cách mạng Hamaica. Đáp án là: C. cách mạng Cuba. </s>
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