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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions. A. injured B. famine C. earthquake D. result Đáp án là: C. earthquake </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho phản ứng hóa học sau: [-CH 2 -CH(OCOCH 3 )-] n +nNaOH ® [-CH 2 -CH(OH)-] n +nCH 3 COONa. Phản ứng này thuộc loại phản ứng A. phân cắt mạch polime B. giữ nguyên mạch polime C. khâu mạch polime D. điều chế polime Đáp án là: B. giữ nguyên mạch polime </s>
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<s> Chọn đáp án đúng với câu hỏi: Find the odd one out A, B, C or D. A. allergy B. fat C. flu D. stomachache Đáp án là: B. fat </s>
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<s> Chọn đáp án đúng với câu hỏi: Một nguồn sóng dao động với phương trình u 0 = 10 cos ( 4 πt + π 3 ). Biết v = 12 c m / s. Điểm A cách nguồn một khoảng 8 cm, tại thời điểm t=0,5s li độ của điểm A là: A. 5 cm B. 0 cm C. 7,5cm D. -5 cm Đáp án là: B. 0 cm </s>
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu đúng trong các phát biểu sau: A. Để điều chế kim loại kiềm, phải điện phân dung dịch muối halogenua của chúng. B. Natri hidroxit là chất rắn dẫn điện tốt, để trong không khí thì dễ hút ẩm, chảy rữa. C. Điện phân dung dịch NaCl bằng điện cực làm bằng nhôm thì xảy ra hiện tượng ăn mòn ở cả 2 điện cực. D. Để bảo quản kim loại kiềm, phải ngâm chúng trong nước. Đáp án là: C. Điện phân dung dịch NaCl bằng điện cực làm bằng nhôm thì xảy ra hiện tượng ăn mòn ở cả 2 điện cực. </s>
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<s> Chọn đáp án đúng với câu hỏi: Điều nào sau đây là sai khi nói về sự bảo toàn cơ năng A. Động năng có thể chuyển hóa thành thế năng B. Thế năng có thể chuyển hóa thành động năng C. Động năng và thế năng có thể chuyển hóa lẫn nhau, nhưng cơ năng được bảo toàn D. Động năng và thế năng có thể chuyển hóa lẫn nhau, nhưng cơ năng không được bảo toàn Đáp án là: D. Động năng và thế năng có thể chuyển hóa lẫn nhau, nhưng cơ năng không được bảo toàn </s>
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<s> Chọn đáp án đúng với câu hỏi: Để thể hiện hướng di chuyển của bão trên Biển Đông vào nước ta, thường dùng phương pháp A. khoanh vùng. B. đường chuyển động. C. chấm điểm. D. kí hiệu theo đường. Đáp án là: B. đường chuyển động. </s>
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<s> Chọn đáp án đúng với câu hỏi: Tác giả Ngô Gia Văn Phái là ai? A.Là một tác giả nổi tiếng thời nhà Lê B.Là một tác giả mang họ Ngô C.Là một nhóm tác giả Việt Nam thuộc dòng họ Ngô Thì D.Là một tác giả nổi tiếng thời nhà Nguyễn Đáp án là: C.Là một nhóm tác giả Việt Nam thuộc dòng họ Ngô Thì </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong các cặp chất sau đây, cặp chất nào cùng tồn tại trong dung dịch? A. KNO 3 và BaCl 2 B. NaHCO 3 và KOH C. Na 2 CO 3 và NaHSO 4 D. Na 2 CO 3 và CaCl 2 Đáp án là: A. KNO 3 và BaCl 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Sự phát triển “t hần kỳ” của Nhật Bản sau chiến tranh thế giới thứ hai được biểu hiện rõ nét nhất ở điểm nào? A. Năm 1968, tổng sản phẩm quốc dân đứng hai trên thế giới sau Mĩ B. Trong khoảng hơn 20 năm (1950-1973), tổng sản phẩm quốc dân của Nhật Bản tăng hơn 20 lần C. Từ thập niên 70 của thế kỷ XX, Nhật Bản trở thanh một trong ba trung tâm kinh tế tài chính của thế giới tư bản (Mĩ, Tây Âu, Nhật Bản) D. Từ nước chiến bại, khó khăn, thiếu thốn, Nhật Bản vươn lên thành siêu cường kinh tế, đứng thứ hai trong thế giới tư bản (sau Mĩ). Đáp án là: D. Từ nước chiến bại, khó khăn, thiếu thốn, Nhật Bản vươn lên thành siêu cường kinh tế, đứng thứ hai trong thế giới tư bản (sau Mĩ) </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. Mr. Smith’s new neighbors appear to be very friendly. A. hostile B. nice C. aware D. popular Đáp án là: A. hostile </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho biểu đồ: Biểu đồ sản lượng thủy sản và giá trị xuất khẩu thủy sản của nước ta, giai đoạn 2010 - 2015 (Nguồn niên giám thống kê Việt Nam 2016, NXB Thống kê,2017) Căn cứ vào biểu đồ, cho biết nhận xét nào sau đây không đúng về sự thay đổi sản lượng thủy sản và giá trị xuất khẩu thủy sản của nước ta, giai đoạn 2010 - 2015? A. Tổng sản lượng thủy sản tăng liên tục B. Sản lượng thủy sản nuôi trồng tăng nhanh hơn tổng sản lượng thủy sản C. Giá trị xuất khẩu thủy sản tăng không ổn định D. Sản lượng thủy sản nuôi trồng tăng nhiều hơn tổng sản lượng thủy sản. Đáp án là: D. Sản lượng thủy sản nuôi trồng tăng nhiều hơn tổng sản lượng thủy sản </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây sai? A. Glucozo còn có tên gọi khác là đường nho. B. H 2 NCH 2 COOH là chất rắn ở điều kiện thường. C. Dung dịch alanin làm quỳ tím chuyển sang màu hồng. D. Tơ tằm thuộc loại tơ thiên nhiên. Đáp án là: C. Dung dịch alanin làm quỳ tím chuyển sang màu hồng. </s>
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 30, cho biết trung tâm công nghiệp nào sau đây ở vùng kinh tế trọng điểm phía Nam không có ngành hóa chất, phân bón? A. Vũng Tàu. B. Tân An. C. Biên Hòa. D. Thủ Dầu Một. Đáp án là: B. Tân An. </s>
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<s> Chọn đáp án đúng với câu hỏi: Sau khi trùng hợp 1 mol etilen thì thu được sản phẩm có phản ứng vừa đủ với 16 gam brom. Hiệu suất phản ứng và khối lượng polime thu được là A. 80%; 22,4 gam. B. 20%; 25,2 gam. C. 90%; 25,2 gam. D. 10%; 28 gam. Đáp án là: C. 90%; 25,2 gam. </s>
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<s> Chọn đáp án đúng với câu hỏi: The phrase “concomitant with” is closest in meaning to A. in dispute with B. prior to C. in conjunction with D. in regard to Đáp án là: C. in conjunction with </s>
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<s> Chọn đáp án đúng với câu hỏi: Cuộc cách mạng của nước nào ở khu vực Mĩ Latinh tạo nên “Lá cờ đầu” trong phong trào giải phóng dân tộc Mĩ Latinh? A. Áchentina. B. Braxin. C. Cu-ba. D. Mêhicô. Đáp án là: C. Cu-ba. </s>
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<s> Chọn đáp án đúng với câu hỏi: Vai trò của các luồng nhập cư đến sự hình thành cộng đồng dân cư châu Mĩ là A. Đa dạng các chủng tộc và xuất hiện thành phần người lai. B. Thúc đẩy sự phát triển kinh tế, xã hội một cách mạnh mẽ. C. Mang lại bức tranh mới trong phân bố dân cư trên thế giới. D. Tàn sát, diệt chủng nhiều bộ tộc bản địa. Đáp án là: A. Đa dạng các chủng tộc và xuất hiện thành phần người lai. </s>
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<s> Chọn đáp án đúng với câu hỏi: Cùng một vật nổi trong hai chất lỏng khác nhau có trọng lượng riêng d 1 và d 2 như hình vẽ. Sự so sánh nào sau đây là đúng? A. d 1 > d 2 B. d 1 < d 2 C. Lực đẩy Ác-si-mét trong hai trường hợp là như nhau D. Trọng lượng của phần chất lỏng bị vật choán chỗ trong hai trường hợp là như nhau Đáp án là: A. d 1 > d 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: According to the passage, who was the first person to use artificial refrigeration for a practical purpose? A. John Gorrie B. William Cullen C. Oliver Evans D. Adolphus Busch Đáp án là: A. John Gorrie </s>
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<s> Chọn đáp án đúng với câu hỏi: Nhóm đất mùn núi cao chiếm khoảng bao nhiêu % diện tích đất tự nhiên? A. 23%. B. 24%. C. 15%. D. 11%. Đáp án là: D. 11% </s>
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<s> Chọn đáp án đúng với câu hỏi: Một ôtô có khối lượng 1 tấn đang chuyển động với v = 54km/h thì tắt máy, hãm phanh, chuyển động chậm dần đều. Biết độ lớn lực hãm 3000N. Xác định quãng đường xe đi được cho đến khi dừng lại. A. 18,75 m B. 486 m C. 0,486 m D. 37,5 m Đáp án là: D. 37,5 m </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho hàm số f(x) có đạo hàm cấp 2 trên khoảng K và x_0∈K. Tìm mệnh đề sai trong các mệnh đề sau: A. Nếu hàm số đạt cực đại tại x_0 thì f^'^'(x_0)<0. B. Nếu hàm số đạt cực đại tại x_0 thì tồn tại a<x_0 để f^'(a)>0. C. Nếu hàm số đạt cực trị tại x_0 thì f^'(x_0)=0. D. Nếu f^'(x_0)=0 và f^'^'(x_0)≠0 thì hàm số đạt cực trị tại x_0. Đáp án là: A. Nếu hàm số đạt cực đại tại x_0 thì f^'^'(x_0)<0. </s>
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<s> Chọn đáp án đúng với câu hỏi: Go and sweep your room! - OK. I am going to do it now. A. Go B. sweep C. I am going to D. it Đáp án là: C. I am going to </s>
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<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây không có tính lưỡng tính? A. H 2 N-CH 2 -COOH B. CH 3 COONH 4 C. NaHCO 3 D. H 2 N-C 6 H 4 -NH 2 Đáp án là: D. H 2 N-C 6 H 4 -NH 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Thể tích của hình lập phương có cạnh 8dm là A. 512dm B. 521 dm^3 C. 512 dm^2 D. 512 dm^3 Đáp án là: D. 512 dm^3 </s>
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<s> Chọn đáp án đúng với câu hỏi: Các chuyển động nào sau đây không phải là chuyển động cơ học? A. Sự rơi của chiếc lá. B. Sự di chuyển của đám mây trên bầu trời. C. Sự thay đổi đường đi của tia sáng từ không khí vào nước. D. Sự đong đưa của quả lắc đồng hồ. Đáp án là: C. Sự thay đổi đường đi của tia sáng từ không khí vào nước. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một chất điểm chuyển động dọc theo trục Ox với phương trình x = 5 + 6 t - 0, 2 t 2 ( m ; s ). Tọa độ và vận tốc tức thời của chất điểm lúc t = 2s là A. 32 m và 6,1 m/s. B. 30 m và 4,2 m/s. C. 16,2 m và 5,2 m/s. D. 19 m và 12,5 m/s. Đáp án là: C. 16,2 m và 5,2 m/s. </s>
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<s> Chọn đáp án đúng với câu hỏi: Employee contracts are eligible for ________ each year. A. renew B. renewal C. renewed D. renewing Đáp án là: B. renewal </s>
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<s> Chọn đáp án đúng với câu hỏi: After Adele graduated from her art school, _____________ A. she posted her songs on MySpace B. she started singing and writing songs C. she got a contract with a recording label D. she started her career in America Đáp án là: C. she got a contract with a recording label </s>
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<s> Chọn đáp án đúng với câu hỏi: Hệ số góc của tiếp tuyến đồ thị hàm số y=tanx tại điểm có hoành độ x=(π)/4 là A. k=1 B. k=1/2 C. k=(√(2))/2 D. k=2 Đáp án là: D. k=2 </s>
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<s> Chọn đáp án đúng với câu hỏi: “Haven’t you put an ad in the paper yet?” – “__________.” A. I can get a paper for you B. I’m not sure C. I’m with you there D. I will, first thing in the morning Đáp án là: D. I will, first thing in the morning </s>
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<s> Chọn đáp án đúng với câu hỏi: Khi một electron bay vào vùng từ trường theo quỹ đạo vuông góc với các đường sức từ, thì A. Chuyển động của electron không bị thay đổi. B. Hướng chuyển động của electron bị thay đổi. C. Độ lớn vận tốc của electron bị thay đổi. D. Năng lượng của electron bị thay đổi. Đáp án là: B. Hướng chuyển động của electron bị thay đổi. </s>
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<s> Chọn đáp án đúng với câu hỏi: Ở nước ta, độ che phủ của rừng phải đạt trên 45% thì mới bảo đảm cân bằng sinh thái vì A. địa hình đồi núi của nước ta chiếm 3/4 diện tích, phần lớn lại là núi thấp. B. nước ta có khí hậu nhiệt đới ẩm gió mùa có sự phân hóa đa dạng. C. nước ta nằm hoàn toàn trong nội chí tuyến D. nước ta có địa hình 3/4 diện tích là đồi núi, mưa lại tập trung vào một mùa. Đáp án là: D. nước ta có địa hình 3/4 diện tích là đồi núi, mưa lại tập trung vào một mùa </s>
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<s> Chọn đáp án đúng với câu hỏi: The article analyzes the impact of the tax based_________real estate prices and sales. A. in B. on C. at D. with Đáp án là: B. on </s>
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<s> Chọn đáp án đúng với câu hỏi: Which does not exist in a Vietnamese wedding party? A. dishes B. firecrackers C. guests D. gifts Đáp án là: B. firecrackers </s>
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<s> Chọn đáp án đúng với câu hỏi: Amino axit X có dạng H 2 NRCOOH (R là gốc hiđrocacbon). Cho 0,1 mol X phản ứng hết với dung dịch HCl (dư) thu được dung dịch chứa 11,15 gam muối. Tên gọi của X là : A. phenylalanin. B. alanin. C. valin. D. glyxin. Đáp án là: D. glyxin </s>
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<s> Chọn đáp án đúng với câu hỏi: Công thức của định luật Húc là: A. F=ma B. F = G m 1 m 2 r 2 C. F=k|Δl| D. F=μN Đáp án là: C. F=k|Δl| </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong công nghệ tế bào, người ta dùng tác nhân nào để kích thích mô sẹo phân hóa thành cơ quan hoặc cơ thể hoàn chỉnh? A. Tia tử ngoại B. Tia X C. Tia hồng ngoại D. Hoocmôn sinh trưởng Đáp án là: D. Hoocmôn sinh trưởng </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) CLOSEST in meaning to the underlined word(s) in each of the following questions. In the future many large corporations will be wiped out and millions of jobs will be lost. A. services B. companies C. supermarkets D. farms Đáp án là: B. companies </s>
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm nào sau đây không phải của mã di truyền? A. Tính thoái hóa B. Tính đặc hiệu C. Tính phổ biến D. Tính đặc trưng Đáp án là: D. Tính đặc trưng </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho hàm sốy=(x^4)/4−2x^2+4 có đồ thị là (C). Tổng tất cả các giá trị thực của tham số m để đồ thị (C) tiếp xúc với parabol (P):y=x^2+m bằng A. 6 B. 126 C. 34 D. -1 Đáp án là: D. -1 </s>
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<s> Chọn đáp án đúng với câu hỏi: They believe that burning fossil fuels is the main cause of air pollution. A. It is believed that burning fossil fuels is held responsible for air pollution. B. Burning fossil fuels is believed to result from air pollution. C. Burning fossil fuels is believed to have caused high levels of air pollution. D. It is believed that air pollution is mainly to blame for burning fossil fuels. Đáp án là: A. It is believed that burning fossil fuels is held responsible for air pollution. </s>
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<s> Chọn đáp án đúng với câu hỏi: Scientists claim that when people are sleep deprived, they feel more irritable and hostile. A. uncomfortable B. responsive C. calm D. miserable Đáp án là: C. calm </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho 500 ml dung dịch NaOH 1,5M vào dung dịch chứa 0,1 mol Al 2 (SO 4 ) 3, thu được m gam kết tủa. Giá trị của m là A. 19,5 B. 15,6 C. 3,9 D. 7,8 Đáp án là: C. 3,9 </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây đúng về mối hệ giữa kiểu gen, môi trường và kiểu hình? A. Bố mẹ luôn truyền cho con những tính trạng có sẵn. B. Kiểu hình là kết quả của sự tương tác giữa kiểu gen với môi trường. C. Nếu cho bò cái ăn đủ chất và đủ lượng thì sản lượng sữa bò giảm nhanh. D. Để tạo ra sự đa dạng về màu sắc của hoa cẩm tú cầu các nhà làm vườn phải thay đổi nhiệt độ môi trường. Đáp án là: C. Nếu cho bò cái ăn đủ chất và đủ lượng thì sản lượng sữa bò giảm nhanh. </s>
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<s> Chọn đáp án đúng với câu hỏi: Hạt nhân poloni P 84 210 o phân rã cho hạt nhân con là chì P 82 206 b. Đã có sự phóng xạ tia A. β – B. α C. γ D. β + Đáp án là: B. α </s>
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<s> Chọn đáp án đúng với câu hỏi: Công thức phân tử của este A mạch hở là C 4 H 6 O 2. X thuộc loại este nào sau đây? A. No, đa chức B. Không no, có 3 liên kết đôi trong phân tử, đơn chức C. No, đơn chức D. Không no, có một nối đôi trong gốc hiđrocacbon, đơn chức Đáp án là: D. Không no, có một nối đôi trong gốc hiđrocacbon, đơn chức </s>
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<s> Chọn đáp án đúng với câu hỏi: You can enjoy a Shakespeare there or just learn (10)___________ life in the seventeenth century. A. in B. to C. for D. about Đáp án là: D. about </s>
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<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu số có hai chữ số chia hết cho cả 2 và 5? A. 20 số B. 15 số C. 12 số D. 9 số Đáp án là: D. 9 số </s>
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<s> Chọn đáp án đúng với câu hỏi: Your sister has worked for a foreign company since 2015, _______? A. hasn’t she B. does she C. doesn’t she D. has she Đáp án là: A. hasn’t she </s>
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<s> Chọn đáp án đúng với câu hỏi: Thuốc thử để phân biệt glixerol, etanol và phenol là: A. Cu(OH) 2, dung dịch NaOH. B. Dung dịch brom, quì tím. C. Na, dung dịch brom. D. Dung dịch brom, Cu(OH) 2. Đáp án là: D. Dung dịch brom, Cu(OH) 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Hãy sắp xếp các số sau theo thứ tự tăng dần -3; +4; 7; -7; 0; -1; +15; -8; 25. A. −8; −7; −3; −1; 0; +4; 7; +15; 25. B. 0; +4; 7; +15; 25, −8; −7; −3; −1; C. 0; −1; −3; +4; −7; 7; −8; +15; 25 D. 25; +15; 7; +4; 0; −1; −3; −7; −8 Đáp án là: A. −8; −7; −3; −1; 0; +4; 7; +15; 25. </s>
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<s> Chọn đáp án đúng với câu hỏi: Cho các ví dụ về biến động số lượng cá thể của quần thể sinh vật sau: I. Ở miền Bắc Việt Nam, số lượng bò sát giảm mạnh vào những năm có mùa đông giá rét, nhiệt độ xuống dưới 800C. II. Số lượng thỏ và mèo rừng Canađa biến động theo chu kì 9 – 10 năm. III. Ở đồng rêu phương Bắc, số lượng cáo và chuột lemmut biến động theo chu kì 3 – 4 năm. IV. Số lượng ếch nhái ở Miền Bắc giảm mạnh khi có đợt rét đầu mùa đông đến. Có bao nhiêu ví dụ về biến động số lượng cá thể của quần thể sinh vật mà nguyên nhân gây biến động là nhân tố không phụ thuộc mật độ quần thể? A. 4 B. 2 C. 1 D. 3 Đáp án là: B. 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: 4. It is stated in the passage that steady dating ____. A. includes a variety of things with a variety of people B. is courtship that you ought to have in your teens C. requires hardly any commitment D. suits people who are in their 20s Đáp án là: D. suits people who are in their 20s </s>
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<s> Chọn đáp án đúng với câu hỏi: Gió mùa đông hoạt động ở nước ta trong thời gian nào? A. Từ tháng 5 đến tháng 10. B. Từ tháng 6 đến tháng 12. C. Từ tháng 11 đến tháng 4 năm sau. D. Từ tháng 12 đến tháng 6 năm sau. Đáp án là: C. Từ tháng 11 đến tháng 4 năm sau. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một vật khối lượng 2,5kg đang nằm yên trên mặt phẳng nằm ngang thì chịu tác dụng của lực kéo 15N theo phương ngang và bắt đầu chuyển động. Biết trong 1 phút đầu tiên sau khi chịu tác dụng lực, vật đi được 2700m. Coi lực cản tác dụng vào vật không đổi trong quá trình chuyển động. Lực cản tác dụng vào vật bằng: A. 11,25N B. 13,5N C. 9,75N D. 15,125N Đáp án là: C. 9,75N </s>
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<s> Chọn đáp án đúng với câu hỏi: Some people ______ a complete transformation while away at college. A. undergo B. go through C. endure D. suffer Đáp án là: A. undergo </s>
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<s> Chọn đáp án đúng với câu hỏi: Nội dung nào sau đây mô tả đúng về nhà nước Văn Lang? A. Có vũ khí tốt, thành Cổ Loa kiên cố. B. Kinh đô đóng tại vùng Phong Khê. C. Chưa có quân đội và chữ viết. D. Đứng đầu nhà nước là An Dương Vương. Đáp án là: C. Chưa có quân đội và chữ viết. </s>
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<s> Chọn đáp án đúng với câu hỏi: Thí nghiệm nào sau đây chứng tỏ trong phân tử glucozơ có 5 nhóm hiđroxyl? A. Tiến hành phản ứng tạo este của glucozơ với anhiđrit axetic B. Khử hoàn toàn glucozơ thành hexan C. Cho glucozơ tác dụng với Cu(OH) D. Thực hiện phản ứng tráng bạc Đáp án là: A. Tiến hành phản ứng tạo este của glucozơ với anhiđrit axetic </s>
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<s> Chọn đáp án đúng với câu hỏi: Cơ thể lưỡng bội (2n) có kiểu gen AABBDDEE. Có một thể đột biến số lượng nhiễm sắc thể mang kiểu gen AABBBDDEEE. Thể đột biến này thuộc dạng A. thể bốn B. thể ba C. thể tam bội D. thể ba kép Đáp án là: D. thể ba kép </s>
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<s> Chọn đáp án đúng với câu hỏi: Tìm phát biểu sai Quang phổ vạch phát xạ A. của hai chất khác nhau không thể có các vạch có vị trí trùng nhau B. của các nguyên tố khác nhau thì khác nhau về: số lượng, vị trí màu sác và độ sáng của các vạch quang phổ C. do các chất khí hay hơi có tỉ khối nhỏ, bị nung nóng phát ra D. phụ thuộc vào nhiệt độ của vật Đáp án là: D. phụ thuộc vào nhiệt độ của vật </s>
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<s> Chọn đáp án đúng với câu hỏi: Sự ra đời của tác phẩm “Bản án chế độ thực dân Pháp” có tác dụng như thế nào? A. Đã giải phóng các dân tộc bị ấp bức ra khỏi “gông xiềng” của chủ nghĩa thực dân. B. Khơi dậy ý chí đấu tranh của các dân tộc bị áp bức, đồng thời tạo nên một làn sóng đấu tranh giải phóng dân tộc ở các thuộc địa. C. Giáng đòn tấn công quyết liệt vào chủ nghĩa thực dân, đồng thời vạch ra con đường cách mạng và tương lai cho các dân tộc bị áp bức. D. Làm cho bọn thực dân khiếp sợ và không dám tiếp tục bóc lột nhân dân các thuộc địa. Đáp án là: C. Giáng đòn tấn công quyết liệt vào chủ nghĩa thực dân, đồng thời vạch ra con đường cách mạng và tương lai cho các dân tộc bị áp bức. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một đoạn mạch của gen có cấu trúc sau: Mạch 1: A - T - G - X - T - X - G Mạch 2: T - A - X - G - A - G - X Trình tự các mạch đơn phân của đoạn mạch ÀRN được tổng hợp từ mạch 2 sẽ là A. A - T -G - X - T - X – G B. A – U-G - X -U - X – G C. A - U - G - X- T- X- G D. U - A - X - G - A - G – X Đáp án là: B. A – U-G - X -U - X – G </s>
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<s> Chọn đáp án đúng với câu hỏi: Các giá trị thực của tham số m để hàm số h(x)=((x^3+1)/(x+1), khi x<−1mx^2−x+m^2, khi x≥−1) có giới hạn tại x=−1 là A. m=−1;m=2 B. m=−1;m=−2 C. m=1;m=−2 D. m=1;m=2 Đáp án là: C. m=1;m=−2 </s>
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<s> Chọn đáp án đúng với câu hỏi: Số nước thành viên của tổ chức Hiệp ước tự do thương mại Bắc Mĩ (NAFTA) là A. 2 B. 3 C. 4 D. 5 Đáp án là: B. 3 </s>
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<s> Chọn đáp án đúng với câu hỏi: Đồ thị hàm số y=(x+2)/(x^2-4x+3) có bao nhiêu đường tiệm cận đứng? A. 0 B. 2 C. 1 D. 3 Đáp án là: B. 2 </s>
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<s> Chọn đáp án đúng với câu hỏi: What does the word 'popular' in line 8 mean? A. liked by a lot people B. not special or unusual C. very old D. of the present time Đáp án là: A. liked by a lot people </s>
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<s> Chọn đáp án đúng với câu hỏi: Một quần thể động vật giao phối, màu sắc cánh do 1 gen gồm 4 alen nằm trên nhiễm sắc thể thường quy định. Trong đó, alen A1 quy định cánh đen trội hoàn toàn so với alen A2, alen A3 và alen A4 ; Alen A2 quy định cánh xám trội hoàn toàn so với alen A3 và alen A4; alen A3 quy định cánh vàng trội hoàn toàn so với alen A4 quy định cánh trắng. Một quần thể đang ở trạng thái cân bằng di truyền có 51% con cánh đen; 13% con cánh xám; 32% con cánh vàng; 4% con cánh trắng. Biết không phát sinh đột biến mới. Theo lí thuyết, có bao nhiêu phát biểu sau đây là đúng? I. Tần số các alen A1; A2; A3; A4 lần lượt là 0,3; 0,1; 0,4; 0,2. II. Cá thể cánh vàng dị hợp chiếm tỉ lệ là 16%. II. Lấy ngẫu nhiên một cá thể cánh đen, xác suất thu được cá thể thuần chủng là 3/17. IV. Nếu chỉ có các cá thể cánh xám giao phối ngẫu nhiên, thì ở đời con thu được tỉ lệ kiểu hình cánh trắng là 16/169. A. 2 B. 1 C. 3 D. 4 Đáp án là: C. 3 </s>
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<s> Chọn đáp án đúng với câu hỏi: Thu nhập bình quân của lao động nước ta thuộc loại thấp trên thế giới là do A. người lao động thiếu sáng tạo. B. năng suất lao động thấp. C. phần lớn lao động sống ở nông thôn. D. độ tuổi của người lao động cao. Đáp án là: B. năng suất lao động thấp. </s>
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<s> Chọn đáp án đúng với câu hỏi: Một trường cấp 3 có 8 giáo viên toán gồm 3 nữ và 5 nam, giáo viên vật lý thì có 4 giáo viên nam. Có bao nhiêu cách chọn ra một đoàn thanh tra có 3 người trong đó có đủ hai môn toán lý vả có đủ giáo viên nam và giáo viên nữ? A. 90 (cách). B. 60 (cách). C. 12960 (cách). D. 120 (cách). Đáp án là: A. 90 (cách). </s>
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<s> Chọn đáp án đúng với câu hỏi: Many English words have been___________over the centuries. The___________of form makes English easy to learn. A. simple – simplicity B. simplicity – simple C. simplified – simplicity D. simplifying – simplicity Đáp án là: C. simplified – simplicity </s>
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<s> Chọn đáp án đúng với câu hỏi: Este X có công thức phân tử C 4 H 8 O 2. Thủy phân X thu được ancol Y. Cho Y tác dụng với CuO nung nóng thu được chất hữu cơ Z. Biết X và Z đều có phản ứng tráng bạc. Y là A. CH 3 B. ( CH 3 ) 2 C. C 2 H 5 D. CH 3 CH 2 CH 2 OH Đáp án là: D. CH 3 CH 2 CH 2 OH </s>
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<s> Chọn đáp án đúng với câu hỏi: Hai người cột hai sợi dây vào đầu một chiếc xe và kéo. Lực kéo xe lớn nhât khi hai lực kéo F 1 v à F 2 A. vuông góc với nhau. B. ngược chiều với nhau. C. cùng chiều với nhau. D. tạo với nhau một góc 45 °. Đáp án là: C. cùng chiều với nhau. </s>
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<s> Chọn đáp án đúng với câu hỏi: Xương có tính đàn hồi rắn chắc vì? A. Trong xương có chất hữu cơ và chất khoáng B. Xương có chất hữu cơ C. Xương có sự kết hợp giữa chất hữu cơ và chất khoáng D. Xương có chất khoáng Đáp án là: C. Xương có sự kết hợp giữa chất hữu cơ và chất khoáng </s>
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<s> Chọn đáp án đúng với câu hỏi: Quá trình đô thị hóa ở các nước phát triển có đặc trưng nào sau đây? A. Trình độ đô thị hóa cao. B. Tỉ lệ dân thành thị khoảng 40%. C. Diễn ra muộn, tốc độ nhanh hơn quá trình công nghiệp hóa. D. Nhịp gia tăng dân số đô thị ngày càng tăng nhanh. Đáp án là: A. Trình độ đô thị hóa cao. </s>
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<s> Chọn đáp án đúng với câu hỏi: All fossil fuels are ____________ resources that cannot be replaced after use. A. unlimited B. renewable C. non-renewable D. available Đáp án là: C. non-renewable </s>
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<s> Chọn đáp án đúng với câu hỏi: Sang năm 1943, Uỷ ban Việt Minh liên tỉnh Cao-Bắc-Lạng lập ra bao nhiêu ban xung phong “Nam tiến”? A. Lập ra 17 ban xung phong “ Nam tiến”. B. Lập ra 18 ban xung phong “ Nam tiến”. C. Lập ra 19 ban xung phong “ Nam tiến”. D. Lập ra 20 ban xung phong “ Nam tiến”. Đáp án là: C. Lập ra 19 ban xung phong “ Nam tiến”. </s>
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<s> Chọn đáp án đúng với câu hỏi: Lời dẫn gián tiếp là gì? A. Nhắc lại lời hay ý của nhân vật và có điều chỉnh theo kiểu thuật lại, không giữ nguyên vẹn. B. Là cách nhắc lại nguyên vẹn lời hay ý của của người hoặc nhân vật. C. Dùng dấu hai chấm để ngăn cách phần được dẫn, thường kèm thêm dấu ngoặc kép. D. Dùng dấu hai chấm để ngăn cách phần được dẫn với phần người dẫn. Đáp án là: A. Nhắc lại lời hay ý của nhân vật và có điều chỉnh theo kiểu thuật lại, không giữ nguyên vẹn. </s>
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<s> Chọn đáp án đúng với câu hỏi: Ý nào sau đây không phải là nguyên nhân tan rã của chế độ xã hội chủ nghĩa ở Liên Xô và các nước Đông Âu? A. Người dân không ủng hộ, không hào hứng với chế độ xã hội chủ nghĩa. B. Đường lối lãnh đạo mang tính chủ quan, duy ý chí, quan liêu C. Không bắt kịp bước phát triển của khoa học – kĩ thuật tiên tiến trên thế giới D. Sự chống phá của các thế lực thù địch trong và ngoài nước Đáp án là: A. Người dân không ủng hộ, không hào hứng với chế độ xã hội chủ nghĩa. </s>
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<s> Chọn đáp án đúng với câu hỏi: Dẫn propen vào dung dịch KMnO 4 thu được sản phẩm hữu cơ là A. CH 3 CH 2 CH 2 CH 3 B. CH 3 CH(OH)CH 3. C. CH 3 CH=CHCH 3 D. CH 3 CH(OH)CH 2 OH Đáp án là: D. CH 3 CH(OH)CH 2 OH </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là không đúng? A. Sau khi quạt điện hoạt động, ta thấy quạt điện bị nóng lên. Sự nóng lên của quạt điện một phần do dòng điện Fu-cô xuất hiện trong lõi sắt của quạt điện gây ra B. Sau khi siêu điện hoạt động, ta thấy nước trong siêu nóng lên. Sự nóng lên của nước chủ yếu là do dòng điện Fu-cô xuất hiện trong nước gây ra C. Khi dùng lò vi sóng để nướng bánh, bánh bị nóng lên. Sự nóng lên của bánh là do dòng điện Fu-cô xuất hiện trong bánh gây ra D. Máy biến thế dùng trong gia đình khi hoạt động bị nóng lên. Sự nóng lên của máy biến thế chủ yếu do dòng điện Fu-cô trong lõi sắt của máy biến thế gây ra Đáp án là: D. Máy biến thế dùng trong gia đình khi hoạt động bị nóng lên </s>
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<s> Chọn đáp án đúng với câu hỏi: work. (28) ______, when you have a higher education A. Otherwise B. Moreover C. Therefore D. However Đáp án là: A. Otherwise </s>
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<s> Chọn đáp án đúng với câu hỏi: Lý do chủ yếu nào buộc thực dân Pháp phải đồng ý bắt tay với phát xít Nhật cùng cai trị Đông Dương? A. Quân Pháp ở Đông Dương không đủ khả năng để chống lại Nhật B. Pháp muốn giữ thế hòa hoãn tạm thời để chờ cơ hội phản công C. Nước Pháp đã bị phát xít Đức chiếm đóng, chính phủ Đờ-gôn phải lưu vong D. Do phe Trục đang chiếm ưu thế trên thế giới Đáp án là: A. Quân Pháp ở Đông Dương không đủ khả năng để chống lại Nhật </s>
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<s> Chọn đáp án đúng với câu hỏi: Ở đậu Hà Lan tồn tại loại lá biến dạng nào? A. Lá biến thành gai B. Lá biến thành tay móc C. Lá biến thành tua cuốn D. Lá phình to chứa chất dự trữ Đáp án là: C. Lá biến thành tua cuốn </s>
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<s> Chọn đáp án đúng với câu hỏi: Chiều rộng hình chữ nhật ABDC lớn hơn chiều rộng hình chữ nhật ABMN là bao nhiêu cm? (hình vẽ câu 3) A. 3cm B. 1cm C. 4cm D. 2cm Đáp án là: B. 1cm </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong các chuyển động sau chuyển động nào là chuyển động do quán tính? A. Hòn đá lăn từ trên núi xuống B. Xe máy chạy trên đường C. Lá rơi từ trên cao xuống D. Xe đạp chạy sau khi thôi không đạp xe nữa Đáp án là: D. Xe đạp chạy sau khi thôi không đạp xe nữa </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong các câu sau, câu nào đúng. A. Crom là kim loại có tính khử mạnh hơn sắt B. Crom là kim loại nên chỉ tạo được oxit bazơ C. Trong tự nhiên, crom có ở dạng đơn chất D. Phương pháp điều chế crom là điện phân Cr 2 O 3 Đáp án là: A. Crom là kim loại có tính khử mạnh hơn sắt </s>
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<s> Chọn đáp án đúng với câu hỏi: Khu vực nào sau đây có trữ lượng dầu mở lớn nhất thế giới? A. Nam Mỹ B. Trung Đông C. Đông Nam Á D. Trung Đông. Đáp án là: D. Trung Đông </s>
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<s> Chọn đáp án đúng với câu hỏi: Đại lượng nào dưới đây không liên quan đến cường độ điện trường cua một điện tích điểm O tại một điểm? A. Điện tích Q. B. Điện tích thử q. C. Khoảng cách r từ Q đến q. D. Hằng số điện môi của môi trường Đáp án là: B. Điện tích thử q. </s>
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<s> Chọn đáp án đúng với câu hỏi: Ngành nào sau đây sử dụng nhiều lao động? A. Chế biến LTTP B. Khai thác nhiên liệu C. Vật liệu xây dựng D. Điện Đáp án là: A. Chế biến LTTP </s>
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<s> Chọn đáp án đúng với câu hỏi: Số nào sau đây không phải số tròn chục? A. 1 010 B. 1 110 C. 1 002 D. 1 040 Đáp án là: C. 1 002 </s>
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<s> Chọn đáp án đúng với câu hỏi: Anyway, it was a (9) holiday. A. fantastic B. welcoming C. pleased D. delicious Đáp án là: A. fantastic </s>
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<s> Chọn đáp án đúng với câu hỏi: Đặt vào hai đầu đoạn mạch điện áp xoay chiều có giá trị hiệu dụng U=100V và tần số f không đổi. Điều chỉnh để R = R 1 = 50 Ω thì công suất tiêu thụ của mạch là P 1 = 60 W và góc lệch pha của điện áp và dòng điện là φ 1. Điều chỉnh để R = R 2 = 25 Ω thì công suất tiêu thụ của mạch là φ 2 và góc lệch pha của điện áp và dòng điện là P 2 với cos φ 1 2 + cos φ 2 2 = 3 / 4. Tỉ số P 2 / P 1 bằng A. 1 B. 3 C. 2 D. 4 Đáp án là: B. 3 </s>
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<s> Chọn đáp án đúng với câu hỏi: Một ống dây dài 50 (cm), diện tích tiết diện ngang của ống là 10 c m 2 gồm 1000 vòng dây. Hệ số tự cảm của ống dây là A. 0,251 H B. 6, 28.10 − 2 H C. 2, 51.10 − 3 m H D. 2, 51.10 − 3 H Đáp án là: D. 2, 51 </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng: A. Tần số của dao động cưỡng bức bằng tần số của lực cưỡng bức. B. Tần số của dao động cưỡng bức luôn bằng tần số dao động riêng. C. Chu kì của dao động cưỡng bức có thể không bằng chu kì của dao động riêng. D. Chu kì của dao động cưỡng bức bằng chu kì của lực cưỡng bức. Đáp án là: B. Tần số của dao động cưỡng bức luôn bằng tần số dao động riêng. </s>
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<s> Chọn đáp án đúng với câu hỏi: His football____________club started to recruit new members last week. A. idol B. composer C. fan D. viewer Đáp án là: C. fan </s>
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<s> Chọn đáp án đúng với câu hỏi: Cặp số (x;y)=(2;−1) là nghiệm của hệ phương trình nào dưới đây? A.(2x+y=3x−2y=4) B.(x+2y=32x−y=4) C.(2x+y=−3x−2y=−4) D.(2x−y=3x+2y=4) Đáp án là: A.(2x+y=3x−2y=4) </s>
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<s> Chọn đáp án đúng với câu hỏi: Trong chăn nuôi, để tận dụng ưu thế lai, người ta dùng phép lai nào sau đây: A. Giao phối cận huyết B. Lai kinh tế C. Lai phân tích D. Giao phối ngẫu nhiên Đáp án là: B. Lai kinh tế </s>
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây đúng? A. Nitơ là phi kim yếu và hoạt động hoá học yếu. B. Nitơ là phi kim mạnh và hoạt động hoá học mạnh ở nhiệt độ cao. C. Đơn chất N 2 chỉ có tính oxi hoá. D. Đơn chất N 2 chỉ có tính khử. Đáp án là: B. Nitơ là phi kim mạnh và hoạt động hoá học mạnh ở nhiệt độ cao. </s>
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