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<s> Chọn đáp án đúng với câu hỏi: The wine had made him a little _____________ and couldn’t control his movement.
A. narrow-minded
B. light-headed
C. light-footed
D. light-hearted Đáp án là: B. light-headed </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word has different stress from others
A. introduce
B. delegate
C. marvelous
D. currency Đáp án là: A. introduce </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Which of the following is NOT MENTIONED about non-degree students?
A. They need not submit transcripts
B. they may be admitted after the deadline
C. They must change their status during the first semester.
D. They may enroll for six credits hours. Đáp án là: A. They need not submit tra... | [
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<s> Chọn đáp án đúng với câu hỏi: Các hợp chất của crom có tính chất lưỡng tính là
A. CrO 3 và K 2 Cr 2 O 7.
B. Cr 2 O 3 3 và Cr OH 3.
C. Cr 2 O 3 và CrO 3.
D. CrO 3 và Cr OH 3. Đáp án là: B. Cr 2 O 3 3 và Cr OH 3. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nghĩa của sự phân tầng trong quần xã là
A. làm tăng khả năng sử dụng nguồn sống, do các loài có nhu cầu ánh sáng khác nhau
B. làm tiết kiệm diện tích, do các loài có nhu cầu nhiệt độ khác nhau
C. làm giảm sự cạnh tranh nguồn sô... | [
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<s> Chọn đáp án đúng với câu hỏi: These formations could tell us what weather to(8) in any part of the world at any time.
A.hope
B.believe
C. consider
D.expect Đáp án là: D.expect </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A: How much is this car? B: 15.000 dollars. My uncle paid for it by ________.
A. cash
B. credit
C. installments
D. hire purchase Đáp án là: C. installments </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vòng tứ kết cuộc thi bơi lội có sáu trường với 8 học sinh đại diện tham gia:
THCS Nguyễn Huệ: Kiệt
THCS Nguyễn Khuyến: Long
THCS Chu Văn An: Nguyên và Đăng
THCS Nguyễn Bỉnh Khiêm: Minh
THCS Lưu Văn Liệt: Thành
THCS Nguyễn Du: Kha và Bình
Xét biến cố “Người chiến thắng không phải đ... | [
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<s> Chọn đáp án đúng với câu hỏi: Tính tích tất cả các nghiệm khác 0 của phương trình (x−2)+(x+3)=5
A.S=−12
B.S=12
C.S=−6
D.S=6 Đáp án là: C.S=−6 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn phát biểu đúng về định luật III Niutơn
A. Khi vật A tác dụng lên vật B một lực, thì vật B cũng tác dụng trở lại vật A một lực. Hai lực này là hai lực trực đối: F → A B = F → B A
B. Khi vật A tác dụng lên vật B một lực, thì... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong kĩ thuật di truyền, để nhận biết được tế bào vi khuẩn nào nhận được ADN tái tổ hợp các nhà khoa học phải chọn
A. thể truyền có các dấu chuẩn hoặc gen đánh dấu hoặc dùng phương pháp lai phân tử.
B. tế bào vi khuẩn nha... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các phát biểu sau: (a) Phân đạm NH 4 NO 3 không nên bón cho loại đất chua; (b) Độ dinh dưỡng của phân kali được đánh giá bằng hàm lượng phần trăm K 2 O tương ứng với lượng kali có trong thành phần của nó; (c) Thành phần chính của... | [
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<s> Chọn đáp án đúng với câu hỏi: Nội dung nào sau đây không phản ánh đúng ý nghĩa của công cuộc cải cách mở cửa ở Trung Quốc (từ năm 1978 đến nay?
A. Chứng tỏ sức sống của chủ nghĩa xã hội.
B. Nâng cao vị thế quốc tế của Trung Quốc.
C. Để lại nhiều kinh nghiệ... | [
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<s> Chọn đáp án đúng với câu hỏi: “Is it going to rain tonight?” - “___________”
A. Yes, I would love to.
B. I’m afraid I have to disagree with you.
C. I don’t think so. I think it’s just going to be windy.
D. Yes, I am. Đáp án là: C. I don’t think so. I think it’s just going to be windy. </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: X, Y là hai axit cacboxylic no, đơn chức, mạch hở, đồng đẳng kế tiếp (M X < M Y ), T là este tạo bởi X, Y với một ancol 2 chức no, mạch hở Z. Đốt cháy hoàn toàn 37,6 gam hỗn hợp M gồm X, Y, Z, T bằng một lượng vừa đủ O 2, thu được 1,3... | [
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<s> Chọn đáp án đúng với câu hỏi: Vấn đề nghị luận của văn bản nằm ở vị trí nào?
A. Câu mở đầu tác phẩm
B. Câu mở đầu đoạn hai
C. Câu mở đầu đoạn ba
D. Phần kết luận Đáp án là: A. Câu mở đầu tác phẩm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chiến thắng nào khẳng định quân dân Miền Nam Việt Nam có khả năng đánh bại quân chủ lực Mĩ trong "Chiến tranh cục bộ"?
A. Chiến thắng Núi Thành.
B. Chiến thắng Vạn Tường.
C. Chiến thắng mùa khô 1965 - 1966.
D. Chiến thắng mùa khô 1... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hàm số y = (4m^2 + 12m + 11)x^2. Kết luận nào sau đây là sai?
A. Đồ thị của hàm số nằm phía trên trục hoành
B. Đồ thị của hàm số nhận gốc tọa độ O là điểm thấp nhất
C. Hàm số nghịch biến với x > 0
D. Hàm số đồng biến với x > 0 Đáp án là: C. Hàm số nghịch biến với x > 0 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Gọi Q là nhiệt lượng mà vật thu vào hay tỏa ra; m là khối lượng vật; c là nhiệt dung riêng của chất làm vật; Δ t là độ biến thiên nhiệt độ. Công thức tính nhiệt lượng mà vật nhận được (hay mất đi) là:
A. Q = m c Δ t.
B. Q = m ... | [
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<s> Chọn đáp án đúng với câu hỏi: Vì sao vùng phía đông châu Âu chủ yếu là thảm thực vật rừng lá kim?
A. Khu vực này có khí hậu ôn đới lục địa.
B. Nguồn nước dồi dào, đất đai màu mỡ.
C. Khu vực này có khí hậu ôn đới hải dương.
D. Địa hình phân hóa phức tạp,... | [
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<s> Chọn đáp án đúng với câu hỏi: Cách viết nào sau đây là đúng?
A. a ⊂[a; b).
B. a ∈ (a; b].
C. {a} ⊂ [a; b].
D. {a} ∈ [a; b]. Đáp án là: C. {a} ⊂ [a; b]. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có 10 cái bút khác nhau và 8 quyển sách giáo khoa khác nhau. Một bạn học sinh cần chọn 1 cái bút và 1 quyển sách. Hỏi bạn học sinh đó có bao nhiêu cách chọn?
A. 80;
B. 60;
C. 90;
D. 70. Đáp án là: A. 80; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ nào sau đây không dùng để xác định độ cao tuyệt đối của các địa điểm trên bản đồ?
A. đường đồng mức.
B. kí hiệu thể hiện độ cao.
C. phân tầng màu.
D. kích thước của kí hiệu. Đáp án là: C. phân tầng màu. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bất kì trong tình huống nào, con đường giành thắng lợi của cách mạng miền Nam cũng vẫn là con đường bạo lực, ngoài ra không có con đường nào khác. Hãy nêu xuất xứ câu nói trên
A. trong Hội nghị lần thứ 15 của Đảng (1-1959).
B. tro... | [
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<s> Chọn đáp án đúng với câu hỏi: Yếu tố nào của tự nhiên không ảnh hưởng đến ngành du lịch?
A. Tài nguyên khoáng sản phong phú
B. Khí hậu nóng ổn định quanh năm
C. Nguồn nước sông phong phú dồi dào
D. Địa hình đa dạng, độc đáo Đáp án là: A. Tài nguyên khoáng sản phong... | [
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<s> Chọn đáp án đúng với câu hỏi: I’m trying to foster an interest in modern art in my children.
A. improve
B. discourage
C. produce
D. speed up Đáp án là: B. discourage </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The teacher let me....................home early because I felt ill.
A. going
B. went
C. go
D. to go Đáp án là: C. go </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tháng 8/1939, để bảo vệ quyền lợi quốc gia trong tình thế bị cô lập, Liên Xô đã
A. kí với Đức bản “Hiệp ước Xô - Đức không xâm lược nhau”.
B. đưa quân sang Tiệp Khắc, giúp Tiệp Khắc chống xâm lược.
C. viện trợ quân sự, gi... | [
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,
498,
29874,
30103,
865,
29871,
29947,
29914,
29896,
29929,
29941,
299... | [
1,
1,
1,
1,
1,
1,
1,
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1,
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1,
1,
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1,
1,
1,
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Find the word which has a different stress pattern from the other.
A. solution
B. increasing
C. recommend
D. abundant Đáp án là: C. recommend </s> | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Este X được tạo bởi từ một axit cacboxylic hai chức và hai ancol đơn chức. Đốt cháy hoàn toàn X thu được CO 2 có số mol bằng với số mol O 2 đã phản ứng. Thực hiện sơ đồ phản ứng sau (đúng với tỉ lệ mol các chất). (1) X + 2H 2 → Ni... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một chất điểm dao động điều hòa trên trục Ox. Trong các đại lượng sau của chất điểm : biên độ, vận tốc, gia tốc, động năng thì đại lượng không đổi theo thời gian là
A. động năng.
B. vận tốc.
C. biên độ.
D. gia tốc. Đáp án là: C.... | [
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1,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Kết quả của phép tính 2/9+2/3
A. 3/2
B. 2/3
C. 1/2
D. 8/9 Đáp án là: D. 8/9 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “I developed the resourcefulness to help myself (4) ____ with difficulty (I met my problems head on).”
A. run
B. sell
C. solve
D. deal Đáp án là: D. deal </s> | [
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<s> Chọn đáp án đúng với câu hỏi: When you (30)______ on the airport island, you can take a dhoni and go to Mal
A. arrive
B. travel
C. depart
D. leave Đáp án là: A. arrive </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Ở mặt nước có hai nguồn kết hợp A, B dao động theo phương thẳng đứng với phương trình u A = u B = 4 cos ( ωt ) mm. Tốc độ truyền sóng và biên độ sóng không đổi khi sóng truyền đi. Phần tử M ở mặt nước thuộc vân giao thoa cực ... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: According to the passage, surfing________.
A. began as a sport in 1943
B. was invented by the native Hawaiians
C. requires expensive equipment
D. is very dangerous Đáp án là: B. was invented by the native Hawaiians </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đại hội đại biểu toàn quốc lần II của Đảng họp vào thời gian nào? Ở đâu?
A. Từ ngày 9 đến 19 - 2 - 1951. Tại Bắc Pó (Cao Bằng).
B. Từ ngày 10 đến 20 - 2 - 1951. Tại Hà Nội.
C. Từ ngày 10 đến 19 - 5 - 1951. Tại Tân Trào (Tuyên Quang).
D.... | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho mạch điện như hình vẽ, trong đó nguồn điện có suất điện động 24V và có điện trở trong rất nhỏ, có điện trở ở mạch ngoài là R 1 = 3Ω, R 2 = 4 Ω và R 3 = 5 Ω. Công của nguồn điện sản ra trong 10 phút và công suất tỏa nhiệt ở điẹ... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một khung dây dẫn hình vuông, cạnh a = 10cm, đặt cố định trong từ trường đều có vecto cảm ứng từ B → vuông góc với mặt phẳng khung. Trong khoảng thời gian Δ t = 0,04 s, cho độ lớn của B → tăng đều từ 0,3T đến 0,5T. Độ lớn của suất... | [
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<s> Chọn đáp án đúng với câu hỏi: Linh asked how long _______ to wait before the doctor could see her.
A. does she have
B. will she have
C. she would have
D. would she have Đáp án là: C. she would have </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lớp 5A có tất cả 30 học sinh, trong đó số học sinh nữ là 12 em. Tỉ số phần trăm của số học sinh nữ so với số học sinh cả lớp là :
A. 2,5%
B. 250%
C. 0,4%
D. 40% Đáp án là: D. 40% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tộc người giữ vai trò chủ thể trong quá trình phát triển văn minh Trung Hoa thời kì cổ - trung đại là
A. người Hán.
B. người Mãn.
C. người Thái.
D. người Mông Cổ. Đáp án là: A. người Hán. </s> | [
1,
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678,
30975,
29876,
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865,
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29901,
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31500,
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302,
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207,
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30... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong những cặp chất sau, cặp chất nào phản ứng được với nhau?
A. CO và Na 2 O.
B. K 2 O và CO 2.
C. CO 2 và P 2 O 5.
D. NO và K 2 O. Đáp án là: B. K 2 O và CO 2. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một loài thực vật, tính trạng màu hoa do 2 cặp gen Aa và Bb phân li độc lập quy định. Khi trong kiểu gen có A thì quy định hoa đỏ; khi kiểu gen aaB- thì quy định hoa vàng; kiểu gen aabb quy định hoa trắng. Biết rằng không xảy ra đột biến. Th... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Phương trình đường thẳng cắt hai trục tọa độ tại A(-2 ; 0) và B(0 ; 3) là:
A. 2x - 3y + 4 = 0 ;
B. 3x - 2y + 6 = 0 ;
C. 3x - 2y - 6 = 0 ;
D. 2x - 3y - 4 = 0. Đáp án là: B. 3x - 2y + 6 = 0 ; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho lăng trụ tam giác đều ABC.A'B'C' có AB = a, AA' = (a)/2. Tính diện tích SA'B_C của tam giác A'BC
A. SA'B_C = (a^2)/2
B. SA'B_C = (a^2√(3))/2
C. SA'B_C = (a^2√(2))/2
D. SA'B_C = a^2 Đáp án là: A. SA'B_C = (a^2)/2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Local news ______ on TV every night at 5:30
A. were
B. was
C. is
D. are Đáp án là: C. is </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sau Hiệp ước Nhâm Tuất 1862, tính chất cuộc kháng chiến của nhân dân ta bao hàm những nhiệm vụ nào?
A. Chống thực dân Pháp xâm lược và chống phong kiến.
B. Chống thực dân Pháp xâm lược.
C. Chống sự đàn áp của quân lính triều... | [
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<s> Chọn đáp án đúng với câu hỏi: Nội dung nào không phản ánh đúng nội dung cơ bản của Tuyên ngôn Nhân quyền và Dân quyền?
A. Đề cao vai trò của các nhà Triết học Ánh sáng
B. Thừa nhận quyền tự do, bình đẳng của con người
C. Khẳng định chủ quyền của nhân dân
D. Tu... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các tập hợp:
A = {x ∈ Z | -4 ≤ x ≤ 5};
B = {x ∈ Z | -2 ≤ x ≤ 6};
C = {x ∈ Z | 0 ≤ x ≤ 1}.
Xác định tập hợp X = (A ∩ B)\C. Câu nào sau đây đúng?
A. X = {-1; 2; 3; 4; 5};
B. X = {2; 3; 4; 5};
C. X = {-2; -1; 2; 3; 4; 5};
D. X = {-2; -1; 2; 3; 4}. Đáp án là: C. Câu nào sau đây đúng?A... | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật được thả rơi tự do ở nơi có gia tốc trọng trường m/ s 2. Thời gian từ lúc thả đến khi chạm đất là 8s. Thời gian vật rơi 10 m cuối cùng trước khi chạm đất là.
A. 0,253s
B. 0,187s
C. 0,126s
D. 0,250s. Đáp án là: C. 0,126s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A: The problems seem annoying to everyone. B :..............
A. It is
B. They are
C. They do
D. It does Đáp án là: C. They do </s> | [
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<s> Chọn đáp án đúng với câu hỏi: một lượng X cần dùng vừa đủ 3,976 lít khí oxi (đktc), thu được 6,38 gam. Mặt khác, X tác dụng với dung dịch NaOH, thu được một muối và hai ancol là đồng đẳng kế tiếp. Công thức phân tử của hai este trong X là Hỗn hợp X gồm 2 este n... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hòa tan hoàn toàn 5,5 gam hỗn hợp gồm Al và Fe vào lượng dư dung dịch H 2 SO 4 loãng, thu được 4,48 lít H 2 (đktc). Thành phần phần trăm khối lượng của Fe trong hỗn hợp đầu là
A. 50,91%
B. 76,36%
C. 25,45%
D. 12,73% Đáp án là: A. 50,91% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Xét sự giao thoa của hai sóng trên mặt nước có bước sóng λ phát ra từ hai nguồn kết hợp đồng pha. Những điểm trong vùng giao thoa có biên độ cực đại khi hiệu đường đi của sóng từ hai nguồn có giá trị bằng:
A. ∆ d = k λ, k = 0, ± 1 ... | [
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1,
1,
1,
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1,
1,
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1,
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1,
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1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Dung dịch muối X làm quỳ tím hóa xanh, dung dịch muối Y không làm đổi màu quỳ tím. Trộn X với Y thấy tạo thành kết tủa. X, Y lần lượt là cặp chất nào dưới đây?
A. NaHCO 3 và BaCl 2
B. Na 2 CO 3 và Ba(OH) 2
C. Na 2 CO 3 và BaCl 2
D. NaHCO 3 ... | [
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<s> Chọn đáp án đúng với câu hỏi: Chức năng của tARN là
A. Truyền thông tin về cấu trúc prôtêin đến ribôxôm
B. Vận chuyển axit amin cho quá trình tổng hợp prôtêin
C. Tham gia cấu tạo nhân của tế bào
D. Tham gia cấu tạo màng tế bào Đáp án là: B. Vận chuyển axit amin cho ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho dung dịch Ba(HCO 3 ) 2 lần lượt vào các dung dịch: KCl, Mg(NO 3 ) 2, KOH, K 2 CO 3, NaHSO 4, K 2 SO 4, Ba(OH) 2, H 2 SO 4, HNO 3. Số trường hợp có tạo ra kết tủa là
A. 4
B. 6
C. 7
D. 5 Đáp án là: C. 7 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vùng biển nước ta rộng bao nhiêu k m 2?
A. 0,5 triệu k m 2.
B. 1 triệu k m 2.
C. 1,5 triệu k m 2.
D. 2 triệu k m 2. Đáp án là: B. 1 triệu k m 2. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Định luật Húc chỉ có thể áp dụng trong trường hợp nào sau đây?
A. Trong giới hạn mà vật rắn còn có tính đàn hồi.
B. Với những vật rắn có khối lượng riêng nhỏ.
C. Với những vật rắn có dạng hình trụ tròn.
D. Cho mọi trường h... | [
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<s> Chọn đáp án đúng với câu hỏi: Có nhiều giải pháp giúp sự phát triển bền vững tài nguyên thiên nhiên, có bao nhiêu giải pháp sau đây đúng? (1) Thoả mãn nhu cầu hiện tại nhưng không ảnh hưởng đến việc thoả mãn nhu cầu của các thế hệ tương lai. (2) Trong khai thác... | [
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<s> Chọn đáp án đúng với câu hỏi: Món ăn đặc trưng của Đồng Tháp Mười mùa nước nổi là gì?
A. Bông điên điển, cá linh, tôm, trà sen.
B. Bông điên điển, cá linh.
C. Cá linh, tôm.
D. Bông điên điển, tôm. Đáp án là: B. Bông điên điển, cá linh. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong đột biến cấu trúc NST, dạng đột biến nào không làm thay đổi số l gen trên NST?
A. Mất đoạn
B. Lặp đoạn
C. Đảo đoạn
D. Chuyển đoạn Đáp án là: C. Đảo đoạn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khởi nghĩa của Nguyễn Hữu Cầu xuất phát từ đâu?
A. Bắc Giang.
B. Bắc Ninh.
C. Thanh Hóa.
D. Hải Phòng. Đáp án là: D. Hải Phòng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc đơn gồm vật có khối lượng 160g, chiều dài dây l = 80cm. Kéo vật lệch khỏi VTCB để dây treo hợp với phương thẳng đứng một góc 30 0 rồi buông tay. Lấy g = 10 m / s 2. Lực căng của dây treo khi vật qua vị trí cao nhất la... | [
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<s> Chọn đáp án đúng với câu hỏi: What is the best title for the passage?
A. What does the family mean to teenagers?
B. How can parents help children in difficulty?
C. What should teenagers do to be happy?
D. When do children really need the family? Đáp án là: A. What does the family mean to teenagers? </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một huyện có 320ha đất trồng cây cà phê và 480ha đất trồng cây cao su. Hỏi diện tích đất trồng cây cao su bằng bao nhiêu phần trăm diện tích đất trồng cây cà phê?
A. 150%
B. 15%
C. 1500%
D. 105% Đáp án là: A. 150% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bước nhảy vọt đầu tiên trong quá trình tiến hoá của loài người là
A. từ vượn cổ chuyển thành Người tối cổ
B. từ Người tối cổ chuyển thành Người tinh khôn
C. từ vượn cổ chuyển thành Người tinh khôn
D. từ Người tinh k... | [
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<s> Chọn đáp án đúng với câu hỏi: Một đoạn trình tự nucleotit trên 1 mạch của phân tử ADN sợi kép và trình tự của axit amin tương ứng với nó được cho dưới đây. Cho biết các bộ ba mã hóa như sau: UAX – tyr, XAU – his, XUG, XUA – leu, GUX – val, GXU – ala, UXG – ser. Mạch ADN: 5... | [
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4546,
31214,
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19807,
31214,
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3367,
3... | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho các mệnh đề:(1) “Nếu √(3) là số vô tỉ thì 3 là số hữu tỉ”(2) “Nếu tứ giác là hình thang có hai cạnh bên bằng nhau thì nó là hình bình hành”(3) “Nếu tứ giác là hình bình hành có hai cạnh bên bằng nhau thì nó là hình thoi”(4) “Nếu 3 > 4 thì 1 > 2”Số mệnh đề có mệnh đề đảo là mệnh đề ... | [
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591... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Tiến hành phản ứng nhiệt nhôm hỗn hợp A gồm Al và Fe x O y (trong điều kiện không có không khí) được hỗn hợp B. Nghiền nhỏ, trộn đều hỗn hợp B rồi chia thành hai phần. - Phần 1 : có khối lượng 4,83 gam được hòa tan hết trong ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: When you get involved in a volunteer project, you are able to ______ your knowledge into practice.
A. take
B. put
C. bring
D. push Đáp án là: B. put </s> | [
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<s> Chọn đáp án đúng với câu hỏi: She wanted to know what had he done before working for her company.
A. wanted
B. what had he done
C. working
D. her Đáp án là: B. what had he done </s> | [
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<s> Chọn đáp án đúng với câu hỏi: It can be cold in Paris. You should bring some warm clothes.
A. Unless you bring some warm clothes, it can be cold in Paris.
B. Provided that you bring some warm clothes, it can’t be cold in Paris.
C. If you didn’t bring some warm clothes, it could be cold in Paris.
D. You should bring... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho ba vật dao động điều hòa cùng biên độ A = 10 c m nhưng tần số khác nhau. Biết rằng tại mọi thời điểm, li độ, vận tốc của các vật liên hệ với nhau bởi biểu thức: x 1 v 1 + x 2 v 2 = x 3 v 3 + 2019. Tại thời điểm t, các vật các... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn phát biểu sai trong các phát biểu sau?
A. Hình chóp đều là hình chóp có đáy là một đa giác bất kì, các mặt bên là những tam giác bất kì có chung đỉnh.
B. Chân đường cao của hình chóp đều trùng với tâm của đường tròn đi qua các đỉnh của mặt đáy.
C. Đường cao vẽ từ đỉnh của mỗi mặt ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho x và y là hai đại lượng tỉ lệ thuận, khi x = 5 thì y = 15. Hệ số tỉ lệ k của y đối với x là:
A. 3;
B. 10;
C. 75;
D. 1/3. Đáp án là: A. 3; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Loại hình vận tải nào có vai trò quan trọng nhất thúc đẩy sự phát triển của vùng Đông Xi-bia?
A. Hàng không.
B. Đường sắt.
C. Đường biển.
D. Đường sông Đáp án là: B. Đường sắt. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Máy biến thế dùng để
A. tăng hiệu điện thế.
B. giữ cho cường độ dòng điện ổn định không đổi.
C. làm tăng hoặc giảm cường độ dòng điện.
D. làm tăng hoặc giảm hiệu điện thế cho phù hợp với việc sử dụng. Đáp án là: D. làm t... | [
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<s> Chọn đáp án đúng với câu hỏi: Có thể sử dụng cách nào để làm sạch dung dịch muối NaNO3 có lẫn tạp chất NaCl?
A. Cô cạn rồi lọc bỏ NaCl
B. Chưng cất cho NaCl bay hơi
C. Cho tác dụng với dung dịch AgNO 3 vừa đủ rồi lọc bỏ kết tủa
D. Cả A, B và C đều đúng Đáp án là: C... | [
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<s> Chọn đáp án đúng với câu hỏi: Em hãy chọn phát biểu sai:
A. Muốn tính diện tích hình tam giác ta lấy độ dài đáy nhân với chiều cao (cùng đơn vị đo) rồi chia cho 2.
B. Muốn tính diện tích hình thang ta lấy tổng độ dài hai đáy nhân với chiều cao (cùng đơn vị đo) rồi chia cho 2.
C. Muốn tính diện tích hình tròn ta lấy... | [
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<s> Chọn đáp án đúng với câu hỏi: Phương trình hóa học điều chế nước Javen là
A. C l 2 + N a O H → N a C l + N a C l O
B. C l 2 + N a O H → H C l + N a C l O
C. C l 2 + H 2 O → H C l + H C l O
D. C l 2 + 2 N a O H → N a C l + N a C l O + H 2 O Đáp án là: D. C l 2 + 2 N a O H → N a C l + N a C l O + H 2 O <... | [
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325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
1963,
29884,
207,
158,
29877,
207,
158,
865,
3367,
30712,
29876,
29... | [
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<s> Chọn đáp án đúng với câu hỏi: She needn't rely any more Rico - or her brothers, she could be entirely independent
A. at
B. on
C. to
D. against Đáp án là: B. on </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
325,
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274,
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29875,
29901,
2296,
817,
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29915,
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19104,
738,
901,
26421,
448,
470,
9... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: She came for Christmas laden with gifts for everyone.
A. later
B. provided
C. unloaded
D. lift Đáp án là: C. unloaded </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
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865,
325,
31280,
29875,
274,
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29884,
298,
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29875,
29901,
2296,
2996,
363,
17661,
301,
4858,
411,
330,
17741,
363,
14332,
298... | [
1,
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1,
1,
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<s> Chọn đáp án đúng với câu hỏi: Neither the Minister nor his colleagues has given an explanation for the chaos in the financial market last week.
A. Neither
B. has given
C. for
D. the financial market Đáp án là: B. has given </s> | [
1,
1,
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678,
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29876,
29871,
30128,
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29871,
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865,
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274,
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29875,
29901,
2448,
2121,
278,
7668,
3643,
670,
23056,
21628,
756,
2183,
385,
825... | [
1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đoạn đầu của bài văn (từ đầu đến qua các thời kì lịch sử), sau khi nêu nhận định tiếng Việt là một thứ tiếng đẹp, một thứ tiếng hay, tác giả đã sử dụng kiểu lập luận nào?
A. Chứng minh nhận định ấy
B. Phân tích nhận định... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
325,
31280,
29875,
274,
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29875,
29901,
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30250,
19807,
31214,
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29871,
30128,
29874,
31500,
30712,
... | [
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Bộ nguồn nối tiếp là bộ nguồn gồm các nguồn điện
A. đặt liên tiếp cạnh nhau.
B. với các cực nối liên tiếp nhau.
C. mà các cực dương của nguồn này được nói với cực âm của nguồn điện tiếp sau.
D. với các cực cùng dâu đu... | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
1952,
31214,
31500,
302,
2543,
29877,
31500,
30712,
29876,
694,
31500... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Theo thuyết kiến tạo mảng, mảng kiến tạo nào sau đây là mảng kiến tạo nhỏ?
A. Bắc Mĩ.
B. Phi-lip-pin.
C. Âu-Á.
D. Nam Cực. Đáp án là: B. Phi-lip-pin. </s> | [
1,
1,
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678,
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29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
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29875,
274,
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29901,
450,
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266,
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4099,
31500,
30103,
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413,
347,
31500,
... | [
1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: A group of concerned teachers met at the Central Province Travel Agency over delays in processing travel _______.
A. warrants
B. testaments
C. coupons
D. testimonies Đáp án là: A. warrants </s> | [
1,
1,
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678,
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29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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865,
325,
31280,
29875,
274,
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298,
228,
190,
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29875,
29901,
319,
2318,
310,
15041,
27335,
1539,
472,
278,
8068,
17325,
3201,
95... | [
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<s> Chọn đáp án đúng với câu hỏi: The author explains the concept of interfering with others’ use and enjoyment of a common by ______.
A. comparing it to another common negative experience.
B. pointing out ways in which people, businesses, organizations interfere with other’ rights.
C. explaining that sometimes this in... | [
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,
4148,
18568,
278,
6964,
310,
1006,
571,
292,
411,
4045,
30010,... | [
1,
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1,
1,
1,
1,
1,
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<s> Chọn đáp án đúng với câu hỏi: As a result the planet's ability to support people is being reduced at the very time when rising human numbers and consumption are (5) _____ increasingly heavy demands on it. Câu 5: ________
A. making
B. doing
C. taking
D. having Đáp án là: A. making </s> | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
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29875,
29901,
1094,
263,
1121,
278,
15754,
29915,
29879,
11509,
304,
2304,
2305,
... | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hệ số hô hấp (RQ) là
A. T ỷ số giữa phân tử H 2 O thải ra/số phân tử O 2 lấy vào khi hô hấp.
B. T ỷ số giữa số phân tử O 2 thải ra/ số phân tử CO 2 lấy vào khi hô hấp.
C. T ỷ số giữa số phân tử CO 2 thải ra/ số phân tử O... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
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29875,
274,
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228,
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29875,
29901,
940,
31214,
31500,
577,
31500,
30103,
5089,
31500,
447,
31500,
30103,... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Khi nói vè môi trường và nhân tố sinh thái, phát biểu nào sau đây đúng?
A. Môi trường chỉ tác động lên sinh vật, còn sinh vật không ảnh hưởng gì đến nhân tố sinh thái
B. Nhân tố sinh thái là tất cả những nhân tố của môi trườn... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
325,
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29901,
476,
2918,
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534,
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1,
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1,
1,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Số điểm kiểm soát chính trong chu kì tế bào của sinh vật nhân thực là
A. 1.
B. 2.
C. 3.
D. 4. Đáp án là: C. 3. </s> | [
1,
1,
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678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
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207,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho 4 điểm A(4; – 3) ; B(5; 1), C(2; 3) và D(– 2; 2). Xác định vị trí tương đối của hai đường thẳng AB và CD:
A. Trùng nhau;
B. Song song;
C. Vuông góc ;
D. Cắt nhau nhưng không vuông góc Đáp án là: D. Cắt nhau nhưng không vuông góc </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
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2... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Biểu hiện của tăng trưởng xanh trong nông nghiệp là
A. sử dụng vật liệu mới, năng lượng tái tạo.
B. phân loại chất thải rắn sinh hoạt tại nguồn.
C. sử dụng công nghệ mới, công nghệ cao.
D. phục hồi các nguồn tài nguyên sinh thá... | [
1,
1,
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207,
140,
29884,
298,
347,
31214,
31500,
29876,
27... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
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1,
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1,
1,
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Mục đích của nhà văn khi khắc hoạ các động tác “ cởi áo, mặc áo, chân bước, miệng nói” cả ông Giuốc-đanh đều diễn ra theo nhịp của điệu nhạc?
A. Khắc hoạ sinh động hơn thói học đòi làm sang của ông Giuốc-đanh và tạo nên tiếng cư... | [
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,
8229,
31214,
29883,
29871,
30128,
29875,
30103,
305,
2723,
207,
140,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Sau Chiến tranh thế giới thứ hai đến năm 1952, nền kinh tế Nhật Bản
A. bị suy sụp nghiêm trọng.
B. trở thành cường quốc hàng đầu thế giới.
C. tăng trưởng và phát triển nhanh.
D. được đầu tư phát triển mạnh. Đáp án là: A. bị suy su... | [
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,
23863,
678,
347,
31500,
30103,
29876,
22024,
29882,
278,
31500,
30103... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Read the passage and answer the questions London is the capital of the United Kingdom. It is one of the world's great cosmopolitan cities. The city has more than 50 ethnic communities of 10,000 or more people. Its population is more than 8 millions. About 70 different national cuisines... | [
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,
7523,
278,
13382,
322,
1234,
278,
5155,
4517,
338,
278,
7483,
310,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
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1,
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1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Phương trình x+√(x−1)=√(1−x) có bao nhiêu nghiệm?
A. 0
B. 1
C. 2
D. 3 Đáp án là: A. 0 </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,
1963,
30416,
30556,
865,
534,
30097,
29876,
29882,
921,
29974,
30562,... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
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1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
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