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<s> Chọn đáp án đúng với câu hỏi: My boss works better whenever he is pressed for time
A. The more time my boss has, the better he works.
B. The less time my boss has, the better he works.
C. The more time my boss has, the worse he works
D. The less time my boss has, the worse he works. Đáp án là: B. The less time my b... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the underlined word or phrase in each sentence that needs correcting Dictionaries frequently explain the origin of the defined word, state its part of speech and indication its correct use.
A. frequently
B. the origin
C. defined
D. indication Đáp án là: D. indication </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 1 anđehit A mạch hở, no thu được CO 2 và H 2 O theo tỉ lệ n A : n CO 2 : n H 2 O = 1 : 3 : 2. Vậy A là:
A. CH 3 CH 2 CHO.
B. OHCCH 2 CHO.
C. HOCCH 2 CH 2 CHO.
D. CH 3 CH 2 CH 2 CH 2 CHO. Đáp án là: B. OHCCH 2 CHO. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các chuyển động nêu dưới đây, chuyển động nào là chuyển động thẳng?
A. Cánh quạt quay.
B. Chiếc lá khô rơi từ cành cây xuống.
C. Ném quả bóng rổ vào rổ.
D. Thả một viên phấn từ trên cao xuống. Đáp án là: D. Thả một viên ph... | [
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<s> Chọn đáp án đúng với câu hỏi: Lựa chọn đáp án đúng nhất:Một chiếc xe máy đi với vận tốc 30 km/giờ và đi trong 2,5 giờ thì hết quãng đường AB. Hỏi 1/2 quãng đường AB là bao nhiêu ki - lô - mét?
A. 30,5km
B. 35,5km
C. 37,5km
D. 35,7km Đáp án là: C. 37,5km </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chính sách kinh tế của nước Nga Xô viết được bắt đầu từ lĩnh vực nào?
A. Công nghiệp.
B. Nông nghiệp.
C. Thương nghiệp.
D. Tài chính. Đáp án là: B. Nông nghiệp. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Write the letter A, B, C, or D on your answer sheet to indicate the word CLOSEST its meaning to the underlined words in the following question. If you go on talking in class, you will not understand the lessons.
A. continue
B. end
C. discontinue
D. stop Đáp án là: A. continue </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây là sai? Người ta nhận ra từ trường tồn tại xung quanh dây dẫn mang dòng điện vì:
A. có lực tác dụng lên một dòng điện khác đặt song song cạnh nó.
B. có lực tác dụng lên một hạt mang điện chuyển động dọc the... | [
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<s> Chọn đáp án đúng với câu hỏi: What did the woman die of? _____ did the woman die?
A. How
B. Where
C. What
D. When Đáp án là: A. How </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tại sao luật pháp thời Lý nghiêm cấm việc giết mổ trâu, bò?
A. Để bảo vệ sản xuất nông nghiệp.
B. Đạo phật được đề cao, nên cấm sát sinh.
C. Trâu bò là động vật quý hiếm.
D. Trâu bò là động vật linh thiêng. Đáp án là: A. Để b... | [
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<s> Chọn đáp án đúng với câu hỏi: Biện pháp nghệ thuật được sử dụng trong bài thơ Bắt nạt của Nguyễn Thế Hoàng Linh?
A. Thể thơ 5 chữ
B. Kết hợp các biện pháp tu từ
C. Lối thơ trong trẻo, hóm hỉnh
D. Tất cả các đáp án trên Đáp án là: D. Tất cả các đáp án trên <... | [
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<s> Chọn đáp án đúng với câu hỏi: Các nhà du hành vũ trụ trên con tàu quay quanh Trái Đất đều ở trạng thái mất trọng lượng là do
A. con tàu ở rất xa Trái Đất nên lực hút của Trái Đất giảm đáng kể.
B. con tàu ở vào vùng mà lực hút của Trái Đất và lực hút của M... | [
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<s> Chọn đáp án đúng với câu hỏi: (Câu 36 đề thi THPT QG 2017 - Mã đề MH3) Đặt điện áp u = 100 2 cos 100 πt (V)(t tính bằng giây) vào hai đầu đoạn mạch mắc nối tiếp gồm điện trở 80Ω, tụ điện có điện dung 10 - 4 2 π F, cuộn dây có độ tự cảm 1 π. Khi đó, cường độ dòng... | [
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<s> Chọn đáp án đúng với câu hỏi: He would like to______ students of the poor neighborhood to have the opportunities as he had.
A. explain
B. help
C. talk
D. wish Đáp án là: B. help </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho (4x^2 + 2x – 18)^2 – (4x^2 + 2x)^2 = m.(4x^2 + 2x – 9). Khi đó giá trị của m là:
A. m = -18
B. m = 36
C. m = -36
D. m = 18 Đáp án là: C. m = -36 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hiệu điện thế giữa hai bản tụ điện phẳng bằng U = 300 V. Một hạt bụi nằm cân bằng giữa hai bản tụ điện và cách bản dưới của tụ điện d 1 = 0, 8 c m. Hỏi trong bao nhiêu lâu hạt bụi sẽ rơi xuống mặt bản tụ, nếu hiệu điện thế g... | [
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<s> Chọn đáp án đúng với câu hỏi: Độ lớn lực tương tác tĩnh điện giữa hai điện tích điểm sẽ tăng 4 lần khi khoảng cách giữa chúng
A. giảm 4 lần
B. giảm 2 lần
C. tăng 4 lần
D. tăng 2 lần Đáp án là: B. giảm 2 lần </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vật rắn nằm cân bằng như hình vẽ, góc hợp bởi lực căng của dây là 150 0. Trọng lượng của vật là bao nhiêu? Biết độ lớn lực căng của hai dây là 200N
A. 103,5N
B. 84N
C. 200N
D. 141,2N Đáp án là: A. 103,5N </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 underlined part that needs correction in each of the following questions Find the mistake: A (A) more electricity you use (B), the higher (C) your bill will be (D).
A. A
B. you use
C. higher
D. will be Đáp án là: A. A <... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu đúng trong các câu sau:
A. Hai đường thẳng song song không có điểm chung.
B. Hai đường thẳng song song có 1 điểm chung.
C. Hai đường thẳng không cắt nhau thì song song.
D. Cả A, B, C đều sai. Đáp án là: A. Hai đường thẳng song song không có điểm chung. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn đáp án đúngMuốn tính thể tích hình hộp chữ nhật ta làm thế nào?
A. Muốn tính thể tích hình hộp chữ nhật ta lấy chiều dài nhân với chiều rộng rồi nhân với chiều cao (cùng đơn vị đo).
B. Muốn tính thể tích hình hộp chữ nhật ta lấy chiều dài nhân với chiều rộng (cùng đơn vị đo) rồi n... | [
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<s> Chọn đáp án đúng với câu hỏi: Lực hấp dẫn do Trái Đất tác dụng lên Mặt Trăng và lực hấp dẫn do Mặt Trăng tác dụng lên Trái Đất
A. khác độ lớn, cùng phương, cùng chiều
B. cùng độ lớn, cùng phương, ngược chiều nhau
C. khác độ lớn, cùng phương, ngược ch... | [
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<s> Chọn đáp án đúng với câu hỏi: Các sản phẩm được tạo ra bằng con đường sinh học được gọi là
A. chế phẩm sinh học.
B. chất kháng sinh.
C. interferon.
D. sản phẩm tái tổ hợp. Đáp án là: A. chế phẩm sinh học. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bài thơ thuộc thể thơ nào?
A. Thơ tự do
B. Thơ bảy chữ
C. Thơ sáu chữ
D. Thơ năm chữ Đáp án là: B. Thơ bảy chữ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đoạn văn trên có mấy danh từ chỉ đơn vị?
A. 1 danh từ
B. 2 danh từ
C. 3 danh từ
D. 4 danh từ Đáp án là: C. 3 danh từ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question. Those shirts need _______________but you needn’t _______________them now.
A. ironing/ iron
B. iron/ iron
C. ironed/ to iron
D. to iron/ to iron Đáp án là: A. ironing/ iron </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự sụp đổ của Liên Xô có tác động như thế nào đến tình hình quan hệ quốc tế giai đoạn này?
A. Kéo theo sự sụp đổ của Mĩ.
B. Kéo theo sự sụp đổ của CNXH trên phạm vi toàn thế giới.
C. Kéo theo sự sụp đổ của trật tự hai cực I... | [
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<s> Chọn đáp án đúng với câu hỏi: Phương án để nâng cao hiệu suất động cơ nhiệt là:
A. Nâng cao nhiệt độ của nguồn nóng
B. Hạ thấp nhiệt độ của nguồn lạnh
C. Vừa nâng cao nhiệt độ nguồn nóng vừa hạ thấp nhiệt độ nguồn lạnh
D. Vừa nâng cao nhiệt độ của ng... | [
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<s> Chọn đáp án đúng với câu hỏi: Fill in each numbered blank with one suitable word or phrase. In England, when the schoolchildren come to school, they first (1) to the cloakroom. They take (2) their coats and raincoats, their caps and hats, and then go to (3) classroom.Some of the students go to the laboratories and ... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về siêu âm, phát biểu nào sau đây sai?
A. Siêu âm có thể truyền được trong chất rắn.
B. Siêu âm có thể bị phản xạ khi gặp vật cản.
C. Siêu âm có tần số lớn hơn 20 KHz.
D. Siêu âm có thể truyền được trong chân không. Đáp... | [
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<s> Chọn đáp án đúng với câu hỏi: Đến cuối thập kỉ 90, EU đã trở thành tổ chức:
A. liên kết kinh tế - chính trị lớn nhất thế giới.
B. liên kết chính trị - quân sự lớn nhất thế giới.
C. hợp tác kinh tế lớn nhất thế giới.
D. liên minh quân sự lớn nhất the... | [
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<s> Chọn đáp án đúng với câu hỏi: Phong trào dân chủ 1936 - 1939 ở Việt Nam là một phong trào
A. có tính chất dân tộc.
B. chỉ có tính dân chủ.
C. không mang tính cách mạng.
D. không mang tính dân tộc. Đáp án là: A. có tính chất dân tộc. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thiết bị thông minh nào sau đây được gắn định vị GPS?
A. Máy lọc không khí.
B. Điện thoại thông minh.
C. Nồi chiêm không dầu.
D. Tủ lạnh samsung lớn. Đáp án là: B. Điện thoại thông minh. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Do đâu người phương Đông phải liên kết với nhau trong các công xã để khai phá đất đai và làm thủy lợi?
A. Do nhu cầu sản xuất nông nghiệp.
B. Do nhu cầu chống lại thiên tai.
C. Do nhu cầu chăn nuôi.
D. Do nhu cầu mở rộng diện tích ca... | [
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<s> Chọn đáp án đúng với câu hỏi: Những thành phố lớn ở châu Á có số dân từ 20 triệu người trở lên là:
A. Tô-ky-ô và Thượng Hải
B. Ca-ra-si và Mum-bai
C. Bắc Kinh và Trùng Khánh
D. Thượng Hải và Ô-sa-ca Đáp án là: A. Tô-ky-ô và Thượng Hải </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong tầng nước ven bờ các loài tảo phân bố khác nhau theo các tầng nước, nguyên nhân dẫn đến hiện tượng đó là:
A. thành phần và cường độ ánh sáng
B. nhiệt độ
C. đặc điểm cấu tạo
D. nguyên nhân khác. Đáp án là: A. thành phần ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho mạch điện gồm R 1 = 10 Ω, R 2 = 15 Ω được mắc nối tiếp vào nguồn điện có hiệu điện thế 9V. Tính điện trở tương đương
A. 6 Ω
B. 25 Ω
C. 10 Ω
D. 15 Ω Đáp án là: B. 25 Ω </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một quần thể ban đầu có tỉ lệ kiểu gen aa chiếm 0,1, còn lại kiểu gen AA và Aa. Sau 5 thế hệ tự phối bắt buộc, tỉ lệ của thể dị hợp trong quần thể còn lại là 0,01875. Tỉ lệ các kiểu gen trong quần thể ban đầu là
A. 0,3 AA : ... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong thí nghiệm giao thoa dùng khe Iâng có khoảng cách từ màn ảnh đến hai khe D = 2,5m, khoảng cách giữa hai khe là a = 2,5mm. Chiếu đồng thời hai ánh sáng đơn sắc có bước sóng λ 1 = 0, 48 μ m và λ 2 = 0, 64 μ m thì vân sáng cùng màu với vân... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các đặc điểm sau đây, đặc điểm nào là cơ bản nhất của giai cấp công nhân Việt Nam?
A. Bị ba tầng áp bức bóc lột của đế quốc, phong kiến, tư sản dân tộc.
B. Có quan hệ tự nhiên gắn bó với giai cấp nông dân.
C. Kế thừa ... | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào đâu để người ta phân chia các nơron thành 3 loại : nơron hướng tâm, nơron trung gian và nơron li tâm?
A. Hình thái
B. Tuổi thọ
C. Chức năng
D. Cấu tạo Đáp án là: C. Chức năng </s> | [
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29901,
9243,
207,
137,
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2723,
207,
158,
30103,
2947,
30712,
29877,
2... | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions. Sojourner Truth will forever be remembered ______________ her “Ain’t I a Woman” speech in 1851.
A. in
B. about
C. as
D. for Đáp án là: D. for </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vùng núi cao Tây Bắc cảnh quan thiên nhiên giống như vùng ôn đới là do
A. có lượng mưa ít, nhiệt độ thấp.
B. nhiệt độ hạ thấp theo độ cao địa hình.
C. ít chịu ảnh hưởng gió mùa Tây Nam.
D. chịu ảnh hưởng của gió mùa đông bắc. Đ... | [
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<s> Chọn đáp án đúng với câu hỏi: Phản ứng giữa Cl 2 và dung dịch NaOH dùng để điều chế
A. thuốc tím.
B. nước Javen.
C. clorua vôi.
D. kali clorat. Đáp án là: B. nước Javen. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Em hãy chọn đáp án đúng nhấtMuốn kiểm tra xem hai đường thẳng có vuông góc hay không thì ta dùng?
A. Thước đo góc hoặc ê-ke.
B. Thước mét và dây điện
C. Thước đo góc và 1 cái dây
D. Thước ê-ke có góc vuông và com-pa Đáp án là: A. Thước đo góc hoặc ê-ke. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các hoạt động công nghiệp tập trung thường gắn liền với
A. các trung tâm công nghiệp.
B. nguồn lao động có tay nghề.
C. kết cấu hạ tầng thuận lợi.
D. tài nguyên thiên nhiên. Đáp án là: D. tài nguyên thiên nhiên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy các kim loại được xếp theo chiều giảm dần tính khử là
A. K, Ag, Fe.
B. Ag, K, Fe.
C. Fe, Ag, K.
D. K, Fe, Ag. Đáp án là: D. K, Fe, Ag </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Peter: “Do you think that we should use public transportation to protect our environment?”– Jerry: “__________.”
A. Yes, it’s an absurd idea.
B. There’s no doubt about it.
C. Of course not. You bet.
D. Well, that’s very surprising! Đáp án là: B. There’s no doubt about it. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 29, cho biết các trung tâm công nghiệp nào sau đây ở Đồng bằng sông Cửu Long đồng cấp quy mô với nhau?
A. Long Xuyên, Sóc Trăng.
B. Sóc Trăng, Cần Thơ.
C. Cần Thơ, Mỹ Tho.
D. Mỹ Tho, Cà Mau. Đáp án là... | [
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<s> Chọn đáp án đúng với câu hỏi: Đoạn văn sau được viết theo phương thức nào? Trời! Nhuận Thổ hẳn biết nhiều chuyện lạ lùng lắm, kể không xiết. Những chuyện đó, bạn bè tôi từ trước đến nay, không ai biết cả. Chúng nó không biết là vì trong khi Nhuận Thổ ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho bảng số liệu sau: Nhiệt độ trung bình một số địa điểm (Nguồn: Niên giám thống kê 2015, NXB Thống kê 2016) Nhận xét nào sau đây đúng với bảng số liệu trên?
A. Nhiệt độ trung bình năm có xu hướng giảm dần từ Bắc vào Nam.
B. N... | [
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<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn a gam một amin (no, đơn chức, mạch hở) cần dùng 8,4 lít khí O 2 (ở đktc) thu được khí CO 2 và 6,3 gam hơi nước và khí N 2. Sục sản phẩm cháy vào bình X đựng dung dịch nước vôi trong (dư), chỉ còn lại duy nhất một c... | [
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<s> Chọn đáp án đúng với câu hỏi: What does the word “he” in paragraph 2 refer to?
A. Comcare, the Federal Government insurer
B. Expert
C. Neil Plumridge, The vice-president of the management consultancy AT Kearney
D. Employee Đáp án là: C. Neil Plumridge, The vice-president of the management consultancy AT Kearney </s... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho sơ đồ chuyển hóa sau: X → + C H 3 O H / H C l, t 0 Y → + C 2 H 5 O H / H C l, t 0 Z → T + N a O H d u, t 0 Biết X là axit glutamic, Y, Z, T là các chất hữu cơ chứa nitơ. Công thức phân tử của Y và T là
A. C 6 H 12 O 4 N và C 5 H 7 O 4 Na 2 N.
B. C 7 H 1... | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một người kéo một lực kế, số chỉ của lực kế là 400N, độ cứng của lò xo lực kế là 1000N/m. Công do người thực hiện bằng
A. 80J
B. 160J
C. 32J
D. 120J Đáp án là: A. 80J </s> | [
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30... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trung tâm kinh tế Lôt An-giơ-let nằm ở khu vực nào của Bắc Mỹ?
A. Phía tây.
B. Phía nam.
C. Phía đông và đông bắc.
D. Phía nam và tây nam. Đáp án là: A. Phía tây. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Biểu thức của định luật Ôm:
A. I = U/R
B. U = I/R
C. R = U/P
D. I = U.R Đáp án là: A. I = U/R </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word which has the MAIN STRESS different from others.
A. heritage
B. advertise
C. construction
D. benefit Đáp án là: C. construction </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: dd X chứa a mol NH 4 +, b mol Al 3+, c mol Mg 2+, x mol NO 3 -, y mol SO 4 2-. Mối quan hệ số mol các ion trong dung dịch là
A. a+ b +c =x +y
B. a + 3b+2c = x +2y
C. a +b/3 + c/2 = x +y/2
D. a +2b +3c = x + 2y Đáp án là: B. a + 3b+2c = x +2y </s> | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Phân số 8/125 chuyển thành số thập phân là:
A. 6,4
B. 0,64
C. 0,064
D. 0,604 Đáp án là: C. 0,064 </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 that differs from the rest in the position of the primary stress in each of the following questions from 5 to 6.
A. possession
B. politics
C. decision
D. refusal Đáp án là: B. politics </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về quá trình phiên mã và dịch mã, nhận định nào dưới đây là đúng?
A. Chỉ khi tổng hợp prôtêin, hai tiểu phần của ribôxôm mới liên kết với nhau để thực hiện chức năng.
B. Ở sinh vật nhân sơ, mỗi quá trình phiên mã tạ... | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 20, cho biết tỉnh nào sau đây ở Đồng bằng sông Cửu Long có sản lượng thủy sản nuôi trồng lớn nhất?
A. Đồng Tháp.
B. An Giang.
C. Cà Mau.
D. Cần Thơ. Đáp án là: B. An Giang. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I think this milk has turned sour, it looks strange and is smelling terrible.
A. has turned
B. looks
C. is smelling
D. think Đáp án là: C. is smelling </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một loài thú, cho con đực mắt trắng, đuôi dài giao phối với con cái mắt đỏ, đuôi ngắn (P), thu được F 1 có 100% con mắt đỏ, đuôi ngắn. Cho F 1 giao phối với nhau, thu được F 2 có kiểu hình gồm: Ở giới cái có 100% cá thể mắt đỏ, ... | [
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<s> Chọn đáp án đúng với câu hỏi: Commonly, __________ is used for lighting in modern society.
A. water
B. electricity
C. gas
D. wood Đáp án là: B. electricity </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đun nóng 0,045 mol hỗn hợp A gồm 2 peptit X và Y (có số liên kết peptit hơn kém nhau 1 liên kết) cần vừa đủ 120ml KOH 1M, thu được hỗn hợp Z chứa 3 muối của Gly, Ala và Val (trong đó muối của Gly chiếm 33,832% về khối lượng). Mặt khá... | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Muối amoni là chất điện li thuộc loại nào?
A. Yếu.
B. Mạnh.
C. Không xác định được.
D. Trung bình. Đáp án là: B. Mạnh. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chủ yếu có khí áp xuất hiện trên Trái Đất là do
A. khí quyển có sức nén.
B. không khí có trọng lượng.
C. sức nén của khí quyển.
D. con người nghiên cứu tạo ra. Đáp án là: B. không khí có trọng lượng. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất: Ca, Ca(OH) 2, CaCO 3, CaO. Dựa vào mối quan hệ giữa các hợp chất vô cơ, hãy chọn dãy biến đổi có thể thực hiện được?
A. Ca ® CaCO 3 ® Ca(OH) 2 ® CaO
B. Ca ® CaO ® Ca(OH) 2 ® CaCO 3
C. CaCO 3 ® Ca ® CaO ® CaCO 3
D. CaCO 3 ® Ca(OH) 2 ® C... | [
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<s> Chọn đáp án đúng với câu hỏi: ________ having a good salary, he also has a private income.
A. What's more
B. Furthermore
C. Apart from
D. From Đáp án là: C. Apart from </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tính từ là gì?
A. Tính từ là từ chỉ đặc điểm, tính chất của sự vật, hoạt động, trạng thái
B. Có thể trực tiếp làm vị ngữ
C. Có thể kết hợp với các từ đã, sẽ, đang, sẽ, không, chưa, chẳng...
D. Cả 3 đáp án trên Đáp án là: D.... | [
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<s> Chọn đáp án đúng với câu hỏi: Chia hỗn hợp gồm este X (C n H 2n-6 O 4, hai chức, mạch hở) và chất béo Y (C m H 2m-6 O 6 ) thành hai phần bằng nhau. Đốt cháy hoàn toàn phần một, thu được CO 2 và 36,36 gam H 2 O. Hiđro hóa hoàn toàn phần hai cần vừa đủ 4,256 lít khí H 2 (đ... | [
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<s> Chọn đáp án đúng với câu hỏi: Ứng dụng nào sau đây không phải của canxi oxit?
A. Sản xuất cao su
B. Sản xuất thủy tinh
C. Khử chua cho đất
D. Sát trùng diệt nấm, khử độc môi trường Đáp án là: A. Sản xuất cao su </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngày 18/6/1919 Nguyễn Ái Quốc thay mặt những người Việt Nam yêu nước gửi Bản yêu sách của nhân dân An Nam tới đâu?
A. Nước Pháp.
B. Hội nghị Paris.
C. Hội nghị Ianta.
D. Hội nghị vécxai Đáp án là: D. Hội nghị vécxai </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nào dưới đây KHÔNG PHẢI là chi tiết miêu tả về cây hoàng lan?
A. Lá cây rung động trong gió, thân cây vút cao lên trời.
B. Mùi hương thơm của hoa thoảng thoảng bay vào.
C. Những vòm ánh sáng lọt qua vòm cây xuống nhẩy múa theo chiều ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cặp kim loại luôn được bảo vệ trong môi trường không khí, nước nhờ lớp màng oxit là:
A. Al-Ca.
B. Fe-Cr.
C. Cr-Al.
D. Fe-Mg. Đáp án là: C. Cr-Al. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đưa một quả cầu kim loại A nhiễm điện dương lại gần một quả cầu kim loại B nhiễm điện dương. Hiện tượng nào dưới đây sẽ xảy ra?
A. Cả hai quả cầu đều bị nhiễm điện do hưởng ứng.
B. Cả hai quả cầu đều không bị nhiễm điệ... | [
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<s> Chọn đáp án đúng với câu hỏi: The underlined word “It” in the first paragraph refers to ____.
A. walnut tree
B. walnut wood
C. furniture
D. flooring Đáp án là: B. walnut wood </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Fish, poultry, beans or nuts _____ half of their dinner plate.
A. make of
B. make out
C. make up
D. make up of Đáp án là: C. make up </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có các lọ riêng biệt đựng các dung dịch không màu: Cu(NO 3 ) 2, AlCl 3, ZnCl 2, FeSO 4, Fe(NO 3 ) 3, NaCl. Chỉ dùng dung dịch nào dưới đây để phân biệt các lọ mất nhãn trên?
A. Na 2 CO 3
B. Ba(OH) 2
C. NH 3
D. NaOH Đáp án là: C. NH 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hệ phương trình: (mx−2y=3m2x−my=−2−4m). Tìm các giá trị của tham số m để cặp số (−1; 2) là nghiệm của hệ phương trình đã cho
A. m = −1
B. m = 1
C. m = −3
D. m = 3 Đáp án là: A. m = −1 </s> | [
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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: Tại sao nói “thế kỷ 21 là thế kỷ của châu Á” :
A. Các nước Châu Á lần lượt giành độc lập
B. Các nước Châu Á đã trở thành trung tâm kinh tế tài chính thế giới
C. Sự ra đời và hoạt động có hiệu quả của các liên minh, liên kê... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu đúng:
A.Vật được chiếu sáng là nguồn sáng
B.Vật sáng tự nó không phát ra ánh sáng
C.Vật được chiếu sáng không phải là nguồn sáng
D.Vật sáng gồm nguồn sáng và vật được chiếu sáng Đáp án là: D.Vật sáng gồm nguồn sán... | [
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<s> Chọn đáp án đúng với câu hỏi: Geography is a very interesting subject. ________, very few people study it thoroughly.
A. And
B. However
C. Moreover
D. So Đáp án là: B. However </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhỏ một giọt nước nóng vào một cốc nước lạnh thì nhiệt năng của giọt nước và nước trong cốc thay đổi như thế nào?
A. Nhiệt năng của giọt nước tăng, của nước trong cốc giảm.
B. Nhiệt năng của giọt nước giảm, của nước tro... | [
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<s> Chọn đáp án đúng với câu hỏi: Đâu KHÔNG phải là mục đích tiến hành các cuộc phát kiến địa lý?
A. Tìm thị trường tiêu thụ hàng hóa.
B. Tìm nguồn nguyên, nhiên liệu dồi dào phục vụ sản xuất công nghiệp.
C. Đi khám phá tìm những vùng đất mới.
D. Tìm ra con đườn... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hai hàm số f(x) và g(x) có giới hạn hữu hạn khi x dần tới x_0. Trong các mệnh đề sau mệnh đề nào đúng?
A. limx→x_0[f(x)−g(x)]=limx→x_0g(x)−limx→x_0f(x)
B. limx→x_0[f(x)−g(x)]=limx→x_0f(x)+limx→x_0g(x)
C. limx→x_0[f(x)+g(x)]=limx→x_0f(x)+limx→x_0g(x)
D. limx→x_0[f(x)+g(x)]=limx→x_0f... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu trả lời đúng nhất. Giá trị của P=2001-(53+1579)-(-53) là
A. là số nguyên âm
B. là số nguyên dương
C. là số nhỏ hơn −2
D. là số nhỏ hơn 100 Đáp án là: B. là số nguyên dương </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một bàn là điện khi được sử dụng với hiệu điện thế 220V thì dòng điện chạy qua bàn là có cường độ dòng điện là 5A. Biết giá tiền điện là 700đ/kWh. Tính tiền điện phải trả cho việc sử dụng bàn là này trong 30 ngày, mỗi ngày... | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên tố hóa học nào dưới đây tham gia cấu tạo nên prôtêin, lipit, gluxit và cả axit nuclêic?
A. Hiđrô
B. Cacbon
C. Ôxi
D. Tất cả các phương án còn lại Đáp án là: D. Tất cả các phương án còn lại </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hành khách ngồi trên toa tàu đang rời khỏi ga. Phát biểu nào sau đây là đúng?
A. So với nhà ga thì hành khách chuyển động
B. So với toa tàu thì hành khách đứng yên
C. So với người soát vé đang đi trên tàu thì hành khách chuyển động
D. ... | [
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<s> Chọn đáp án đúng với câu hỏi: Đạo hàm của hàm số y=(3−x^2)2/^3 tại x = 1 là:
A. (sqrt[3](4))/3;
B. −(2sqrt[3](4))/3;
C. −(sqrt[3](2))/3;
D. (2sqrt[3](4))/3. Đáp án là: B. −(2sqrt[3](4))/3; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hai đơn thức: 2x^2y^3; – 3/7 x^2y^3. Tổng hai đơn thức đó là
A. 17/7 x^2y^3;
B. 12/7 x^2y^3;
C. 11/7x^2y^3 ;
D. – 11/7x^2y^3. Đáp án là: C. 11/7x^2y^3 ; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: (Câu 2 Đề thi Minh họa 2019): Con lắc lò xo có độ cứng k dao động điều hòa dọc theo trục Ox nằm ngang. Khi vật ở vị trí có li độ x thì lực kéo về tác dụng lên vật có giá trị là
A.-kx
B. k x 2
C. - 1 2 k x
D. 1 2 k x 2 Đáp án là: A.-kx </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Biên độ nhiệt độ trung bình năm ở phần lãnh thổ phía Bắc nước ta lớn là do
A. gần xích đạo, không có mùa đông lạnh.
B. gần chí tuyến, có một mùa đông lạnh.
C. gần chí tuyến, khí hậu ôn hòa.
D. gần xích đạo, khí hậu nóng qua... | [
1,
1,
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29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
350,
347,
31500,
29876,
29871,
30128,
29877,
31214,
31500,
302,
29882... | [
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... |
<s> Chọn đáp án đúng với câu hỏi: Chất hữu cơ X khi thủy phân trong dung dịch H 2 S O 4 loãng thì thu được 1 sản phẩm duy nhất, X là
A. Tinh bột
B. Chất béo
C. Protein
D. Etyl axetat Đáp án là: A. Tinh bột </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,
16579,
31500,
30103,
29873,
22888,
207,
158,
30478,
29884,
1302,
207,... | [
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: The word “median” in paragraph 2 is closest in meaning to ______.
A. mean
B. optimal
C. average
D. middle Đáp án là: C. average </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,
1734,
1346,
2168,
713,
30024,
297,
14880,
29871,
29906,
338,
2... | [
1,
1,
1,
1,
1,
1,
1,
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1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Người ta thường dùng da trâu, bò để làm trống, đó thực chất là phần nào của da?
A. Tầng sừng
B. Tầng tế bào sống
C. Lớp bì
D. Lớp mỡ Đáp án là: C. Lớp bì </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,
405,
2543,
207,
158,
29877,
207,
158,
30712,
29875,
11062,
266,
298... | [
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,
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1,
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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,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: The word “elegant” is closest in meaning to _______.
A. Decent
B. confident
C. comfortable
D. neat Đáp án là: A. Decent </s> | [
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29976,
29886,
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30030,
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325,
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29875,
274,
30057,
29884,
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29901,
450,
1734,
1346,
29872,
1397,
424,
30024,
338,
21438,
297,
6593,
30... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
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