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<s> Chọn đáp án đúng với câu hỏi: What is the main idea of the third paragraph?
A. Local herders are uncooperative in attempts to save snow leopards.
B. The snow leopard’s endangerment is due to in part to the black market.
C. Snow leopards are killed for their fur and body parts.
D. It is difficult to enforce the laws... | [
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<s> Chọn đáp án đúng với câu hỏi: Gustave Eiffel was well-known for ____________ Eiffel tower.
A. design
B. designing
C. to design
D. designed Đáp án là: B. designing </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các nhận định sau: (1) Phản ứng cộng HX của các ankin cũng tuân theo quy tắc Mac – cốp – nhi – cốp như anken. (2) Phản ứng cộng HX của ankan tuân theo quy tắc Mac – cốp – nhi – cốp. (3) Các anken tham gia phản ứng cộng với dung dịch theo ... | [
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<s> Chọn đáp án đúng với câu hỏi: Các tính trạng được quy định bởi gen lặn nằm trên nhiễm sắc thể Y
A. có hiện tượng di truyền chéo.
B. chỉ biểu hiện ở cơ thể cái.
C. chỉ biểu hiện ở cơ thể đực
D. chỉ biểu hiện ở một giới. Đáp án là: D. chỉ biểu hiện o... | [
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<s> Chọn đáp án đúng với câu hỏi: Some people try to do exercise or play sports too vigorously too soon, and (3) ____________ they cause themselves injuries which can take a long time to heal.
A. as a result
B. despite
C. in order that
D. otherwise Đáp án là: A. as a result </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nan xương có tác dụng gì?
A. Làm cho xương lớn lên về bề ngang.
B. Sinh hồng cầu.
C. Phân tán lực tác động
D. Cả B và C. Đáp án là: D. Cả B và C </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mệnh đề nào sau đây là đúng?
A. \(C_{2n}^0 + C_{2n}^1 +... + C_{2n}^{n - 1} = C_{2n}^{n + 1} + C_{2n}^{n + 2} +... + C_{2n}^{2n}\)
B. \(C_{2n}^0 + C_{2n}^1 +... + C_{2n}^{n - 2} = C_{2n}^{n + 1} + C_{2n}^{n + 2} +... + C_{2n}^{2n}\)
C. \(C_{2n}^0 + C_{2n}^1 +... + C_{2n}^{n + 1} = C_{2... | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào dưới đây đúng khi nói về lục lạp?
A. Có chứa sắc tố diệp lục tạo màu xanh ở lá cây
B. Có chứa nhiều trong các tế bào động vật
C. Là loại bào quan nhỏ bé nhất
D. Có thể không có trong tế bào của cây xanh Đáp án là... | [
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<s> Chọn đáp án đúng với câu hỏi: Một đoạn mạch AB gồm hai đoạn mạch AM và MB mắc nối tiếp. Đoạn mạch AM có điện trở R = 100 Ω mắc nối tiếp với cuộn cảm thuần có độ tự cảm 2/π H, đoạn mạch MB chỉ có tụ điện với điện dung thay đổi được. Đặt điện áp u = U 0 co... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi tiến hành trùng ngưng giữa fomanđehit với lượng dư phenol có chất xúc tác axit, người ta thu được nhựa
A. novolac.
B. rezol.
C. rezit.
D. phenolfomanđehit. Đáp án là: A. novolac. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hai đa thức P(x) = -x^3 + 2x^2 + x - 1 và Q(x) = x^3 - x^2 - x + 2. Nghiệm của đa thức P(x) + Q(x) là:
A. Vô nghiệm.
B. -1.
C. 1.
D. 0. Đáp án là: A. Vô nghiệm. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thể tích khối lăng trụ có diện tích đáy B và chiều cao h là
A. 3Bh
B. Bh
C. 4/3Bh
D. 1/3Bh Đáp án là: B. Bh </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở một loài thực vật, tính trạng màu sắc hoa do một cặp gen quy định, tính trạng hình dạng quả do một cặp gen khác quy định. Cho cây hoa đỏ, quả tròn (P) có kiểu gen giống nhau giao phấn với nhau, thu được F 1 gồm 4 loại kiểu hình, tro... | [
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<s> Chọn đáp án đúng với câu hỏi: Lãnh đạo cuộc Cách mạng dân chủ tư sản tháng Hai năm 1917 ở Nga là
A. giai cấp tư sản
B. giai cấp vô sản
C. quý tộc phong kiến
D. binh lính Đáp án là: B. giai cấp vô sản </s> | [
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1,
1,
1,
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1,
1,
1,
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,
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1,
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1,
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X có tỉ khối so với H 2 là 21,2 gồm propan, propen và propin. Khi đốt cháy hoàn toàn 0,1 mol X, tổng khối lượng của C O 2 và H 2 O thu được là:
A. 20,40 gam.
B. 18,96 gam.
C. 16,80 gam.
D. 18,60 gam. Đáp án là: C. 16,80 gam. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Khi nói đến quá trình phân giải kị khí trong hô hấp thực vật, có bao nhiêu phát biểu nào sau đây sai? I. Xảy ra khi rễ bị ngập úng, hạt bị ngâm vào nước II. Xảy ra cây ở trong điều kiện thiếu oxi III. Xảy ra ở tế bào chất của tế... | [
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<s> Chọn đáp án đúng với câu hỏi: know/some whales /move/ warm waters/give birth
A. They know some whales should move into warm waters giving birth.
B. It is known that some whales move into warm waters to give birth.
C. Some whales are known of moving into warm waters to give birth.
D. Some whales are knowing to move ... | [
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29914,... | [
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<s> Chọn đáp án đúng với câu hỏi: Thuận lợi lớn của Liên Xô sau Chiến tranh thế giới thứ II là:
A. vị thế, uy tín của Liên Xô được nâng cao trên thế giới.
B. các nước tư bản dỡ bỏ cấm vận, bao vây Liên Xô.
C. trở thành chỗ dựa vững chắc cho phong trào cách ... | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose a word in each line that has different stress pattern.
A. typhoon
B. response
C. device
D. garbage Đáp án là: D. garbage </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “ rough ” is closest in meaning to ______________.
A. careful
B. forceful
C. easy
D. mild Đáp án là: B. forceful </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Làm tròn số 1,103 đến chữ số thập phân thứ nhất ta được:
A. 1,11
B. 1
C. 1,2
D. 1,1 Đáp án là: D. 1,1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các polime: (1) polietilen, (2) poli(metyl metacrylat), (3) polibutađien, (4) polistiren, (5) poli(vinyl axetat) và (6) tơ nilon-6,6. Trong các polime trên, các polime có thể bị thuỷ phân trong dung dịch axit và dung dịch kiềm là:
A. (2), (5), (6)
B. (2), (3), (6)... | [
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1248,... | [
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<s> Chọn đáp án đúng với câu hỏi: Xã hội Ấn Độ suy yếu từ đầu thế kỉ XVII là do cuộc tranh giành quyền lực giữa
A. các chúa phong kiến
B. địa chủ và tư sản
C. tư sản và phong kiến
D. phong kiến và nông dân Đáp án là: A. các chúa phong kiến </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thank you very much. I haven’t been to_______party for ages.
A. so enjoyable
B. the so enjoyable
C. so enjoyable a
D. a so enjoyable Đáp án là: C. so enjoyable a </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the best option to fill each of the blanks to make a meaningful passage. Question 4
A. which
B. who
C. there
D. whose Đáp án là: A. which </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trọng tâm của đường lối đổi mới ở Trung Quốc (1978 - 2000) là
A. phát triển kinh tế
B. phát triển kinh tế, chính trị
C. cải tổ chính trị
D. phát triển văn hóa, giáo dục Đáp án là: A. phát triển kinh tế </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong hình sau, xy là trục chính thấu kính, AB là vật thật, A'B' là ảnh. Khi nói về ảnh A'B' và loại thấu kính, kết luận nào sau đây đúng?
A. Ảnh thật; thấu kính hội tụ.
B. Ảnh thật; thấu kính phân kì.
C. Ảnh ảo; thấu kính hội tụ.
... | [
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<s> Chọn đáp án đúng với câu hỏi: Tại sao tác giả dân gian không miêu tả chi tiết nhân vật Sọ Dừa
A. Vì truyện có quá nhiều tình tiết khác hấp dẫn
B. Dung lượng của truyện cổ tích không cho phép miêu tả kĩ về nhân vật
C. Nhân vật có tên riêng nhưng đại diện cho... | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nghĩa chiến lược của các đảo và quần đảo nước ta về kinh tế là
A. căn cứ để tiến ra khai thác nguồn lợi biển.
B. cơ sở để khẳng định chủ quyền vùng biển.
C. tạo thành hệ thống tiền tiêu bảo vệ đất liền.
D. làm điểm ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Dãy gồm với các chất đều tác dụng với phenol là
A. dung dịch NaCl, dung dịch NaOH, kim loại Na.
B. ethyl alcohol, dung dịch bromine, kim loại Na.
C. dung dịch bromine, kim loại Na, dung dịch NaOH.
D. dung dịch NaOH, khí methane, ethyl alcohol. Đáp án là: C. dun... | [
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<s> Chọn đáp án đúng với câu hỏi: Kiểu gen AAaa khi giảm phân có thể tạo ra giao tử nào sau đây?
A. aa
B. AA
C. Aa
D. Tất cả các phương án còn lại đều đúng Đáp án là: D. Tất cả các phương án còn lại đều đúng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một con lắc lò xo dao động điều hòa theo phương thẳng đứng. Trong quá trình dao động chiều dài của lò xo biến thiên từ 20cm đến 30cm. Trong một chu kì dao động thời gian lò xo nén bằng 1⁄2 thời gian lò xo giãn.Tính chiều dài tự nhiê... | [
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3... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho tam giác ABC có A^=90^o;AB=AC. Khi đó:
A. ΔABC là tam giác vuông
B. ΔABC là tam giác cân
C. ΔABC là tam giác vuông cân
D. Cả A,B,C đều đúng Đáp án là: D. Cả A,B,C đều đúng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Z là este thuần chức tạo bởi axit X, Y và ancol T (trong Z chứa không quá 5 liên kết π; X, Y là hai axit hữu cơ, mạch hở với M X < M Y ). Đốt cháy m gam hỗn hợp E chứa X, Y, Z, T cần dùng 6,944 lít O 2 (đktc), thu được 7,616 lít khí CO 2 (đktc... | [
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<s> Chọn đáp án đúng với câu hỏi: ______ by a dog when she was small, Mary is afraid of all of them.
A. Bitten
B. Biting
C. Having bitten
D. Be bitten Đáp án là: A. Bitten </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Who is Wendy Jacobs?
A. A student at Jacksonville State University
B. One of professor bannister's graduate assitants
C. A fourth-year student at the Donoho school
D. A representative of the Damke Foundation Đáp án là: C. A fourth-year student at the Donoho school </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Governments should _____ international laws against terrorism
A. bring up
B. bring about
C. bring in
D. bring back Đáp án là: C. bring in </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một chất điểm ở trạng thái cân bằng khi gia tốc của nó
A. không đổi
B. giảm dần
C. tăng dần
D. bằng 0 Đáp án là: D. bằng 0 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: 5269 + 2017... 2017 + 5962
Dấu thích hợp điền vào chỗ chấm là:
A. <
B. >
C. =
A. <
B. >
C. =
D. ≤ Đáp án là: A. < </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
A. dr ou ght
B. gr ou p
C. f ou ntain
D. res ou nding Đáp án là: B. gr ou p </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Which of the following best serves as the title for the passage?
A. The invention of the telephone
B. Alexander Graham Bell and Elisha Gray
C. Bell’s patent of telephone
D. Investigation related to Bell’s patent Đáp án là: A. The invention of the telephone </s> | [
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<s> Chọn đáp án đúng với câu hỏi: All of the following are true about Liittschwager and his team EXCEPT that _______.
A. They went to various places in the world.
B. They discovered numerous organisms in small size.
C. They examined cubes by putting them on the ground or in the water.
D. They did some experiments with ... | [
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2178,
310,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: We need to motivate young people and make sure we create a culture or social activism where we insist that people help their community to empower others, (85)______ themselves.
A. as much as
B. as well as
C. as long as
D. as good as Đáp án là: B. as well as </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Theo mẫu nguyên tử Bo, bán kính quỹ đạo K của êlectron trong nguyên tử hiđrô là r 0. Khi êlectron chuyển từ quỹ đạo O về quỹ đạo M thì bán kính quỹ đạo giảm bớt
A. 12 r 0.
B. 9 r 0.
C. 16 r 0.
D. 4 r 0. Đáp án là: C. 16 r 0. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự kiện ngày 11/9/2001 ở nước Mĩ cho thấy
A. nhân loại đang phải đối mặt với một nguy cơ và thách thức lớn.
B. hòa bình, hợp tác không phải là xu thế chủ đạo của quan hệ quốc tế.
C. cục diện hai cực trong quan hệ quốc tế chư... | [
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<s> Chọn đáp án đúng với câu hỏi: Nội dung nào không phải là nguyên tắc cơ bản trong Hiệp ước Bali?
A. Không can thiệp vào công việc nội bộ của nhau.
B. Giải quyết các tranh chấp bằng biện pháp hòa bình.
C. Không thử hoặc sử dụng vũ khí hạt nhân.
D. Tôn trọng chủ ... | [
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<s> Chọn đáp án đúng với câu hỏi: Trong thí nghiệm I-âng về giao thoa với ánh sáng đơn sắc có bước sóng 0, 6 μ m. Biết khoảng cách giữa hai khe là 0,6 mm, khoảng cách từ mặt phẳng chứa hai khe đến màn quan sát là 2 m. Trên màn, hai điểm M và N nằm khác phía so với vân... | [
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<s> Chọn đáp án đúng với câu hỏi: Trạng thái dừng của nguyên tử là
A. trạng thái đứng yên của nguyên tử.
B. trạng thái chuyển động đều của nguyên tử.
C. trạng thái trong đó mọi êlectron của nguyên tử đều không chuyển động đối với hạt nhân.
D. một trong số các tra... | [
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<s> Chọn đáp án đúng với câu hỏi: If she _______ a car, she would go out in the evening.
A. have
B. has
C. has had
D. had Đáp án là: D. had </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hợp chất hữu có X có công thức phân tử C 3 H 9 NO 2, X có khả năng phản ứng với cả dung dịch NaOH và dung dịch HCl. Số công thức cấu tạo phù hợp với X là
A. 1
B. 2
C. 3
D. 4 Đáp án là: D. 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở vỏ não, sự gia tăng diện tích có được chủ yếu là nhờ
A. sự tạo thành các rãnh, khe, khúc cuộn do sự gấp nếp của vỏ não.
B. sự tăng thể tích của vùng đại não.
C. sự liên kết qua lại giữa vỏ não với các vùng lân cận.
D. s... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hình chóp S.ABCD, với đáy ABCD là hình bình hành tâm O, AD, SA, AB đôi một vuông góc AD = 8, SA = 6. (P) là mặt phẳng qua trung điểm của AB và vuông góc với AB. Thiết diện của (P) và hình chóp có diện tích bằng?
A. 20
B. 16
C. 17
D. 36 Đáp án là: D. 36 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu không đúng với sự hấp thụ thụ động các ion khoáng ở rễ là các ion khoáng
A. hòa tan trong nước và vào rễ theo dòng nước.
B. hút bám trên bề mặt của keo đất và trên bề mặt rễ, trao đổi với nhau khi có sự tiếp xúc ... | [
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<s> Chọn đáp án đúng với câu hỏi: Đun nóng hỗn hợp gồm 22,5 gam glyxin; 17,8 gam alanin; 11,7 gam valin với xúc tác thích hợp, sau khi phản ứng hoàn toàn thu được m gam hỗn hợp X chỉ gồm các tripeptit. Giá trị của m là
A. 41,2 gam
B. 43 gam
C. 44,8 gam
D. 52 gam Đáp án là: C. 44,8 gam ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Thủy phân hoàn toàn m gam chất béo E cần vừa đủ 150 ml dung dịch KOH 0,5M, thu được dung dịch chứa a gam muối X và b gam muối Y (M X < M Y, trong mỗi phân tử muối có không quá ba liên kết π, X và Y có cùng số nguyên tử C, số mol của X lơ... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn hình vẽ có hai đường thẳng vuông góc với nhau:
A.
B.
C.
D. Đáp án là: A. </s> | [
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29875,
274,
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29884,
298,
228,
190,
146,
29875,
29901,
678,
30975,
29876,
298,
30097,
29876,
29882,
325,
228,
189,
192,
28... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các chất sau: fructozơ, glucozơ, etyl axetat, Val-Gly-Ala. Số chất phản ứng với C u ( O H ) 2 ở nhiệt độ thường, tạo dung dịch màu xanh lam là
A. 4.
B. 1.
C. 2.
D. 3. Đáp án là: C. 2. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho Q(x) – (x^5 + 2x^3 – 2 + x) = 3x^3 + 2x^2 – 1. Tìm Q(x) rồi sắp xếp theo lũy thừa giảm dần của biến.
A. Q(x) = x^5 + 5x^3 + 2x^2 + x – 3;
B. Q(x) = 5x^3 + 2x^2 – 3 + x^5 + x;
C. Q(x) = – x^5 + 5x^3 + 2x^2 + x + 3;
D. Q(x) = x^3 + 2x^2 + 1 + x^5 + x. Đáp án là: A. Q(x) = x^5 + 5x^3 ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chính dẫn đến phong trào đấu tranh của nhân dân ta chống chính quyền đô hộ phương Bắc là
A. chính quyền đô hộ thực hiện chính sách lấy người Việt trị người Việt
B. chính sách đồng hóa của chính quyền đô hộ gây ... | [
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<s> Chọn đáp án đúng với câu hỏi: Trọng tâm là điểm đặt của........tác dụng lên vật
A. trọng lực
B. trọng lượng
C. lực hấp dẫn
D. lực Đáp án là: A. trọng lực </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số liền trước của số 99 là:
A. 98
B. 100
C. 90
D. 80 Đáp án là: A. 98 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
A. vote
B. own
C. allow
D. hope Đáp án là: C. allow </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch FeSO 4 và dung dịch CuSO 4 đều tác dụng được với:
A. Zn.
B. Ag.
C. Fe.
D. Cu. Đáp án là: A. Zn. </s> | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: They (4) ______ often beautifully illustrated and always rare and expensive.
A. are
B. have
C. were
D. have been Đáp án là: C. were </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Rút gọn biểu thức x^n( x^n + 1 + y^n ) - y^n( x^n + y^n - 1 ) được kết quả là?
A. x^2n + 1 - y^2n - 1
B. x^2n - y^2n
C. x^2n - y^2n - 1
D. x^n + 2 - y^n Đáp án là: A. x^2n + 1 - y^2n - 1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chủ yếu dẫn đến tình trạng xâm nhập mặn diễn ra hằng năm ở Đồng bằng sông Cửu Long là
A. diện tích rừng ngập mặn giảm
B. mùa khô kéo dài và sâu sắc
C. không có đê bao quanh
D. có nhiều cửa sông đổ ra biển Đáp án ... | [
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<s> Chọn đáp án đúng với câu hỏi: I bought................................................ different gifts for my friends.
A. lot of
B. a lots of
C. lots of
D. a lot Đáp án là: C. lots of </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Kim cương và than chì là các dạng
A. đồng hình của cacbon
B. đồng vị của cacbon
C. thù hình của cacbon
D. đồng phân của cacbon Đáp án là: C. thù hình của cacbon </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp X gồm Na, K, Na 2 O và K 2 O. Hòa tan hoàn toàn 25,7 gam X vào nước, thu được 3,36 lít khí H 2 (đktc) và dung dịch Y, trong đó có 22,4 gam KOH. Hòa tan hết 0,4 mol H 3 PO 4 vào Y, thu được dung dịch chứa m gam muối. Giá trị của m là:
A. 77... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Chọn câu sai:
A. Tai người có thể nghe được âm có tần số trong một khoảng nhất định
B. Đơn vị của tần số là héc (Hz)
C. Các âm có độ cao khác nhau có tần số khác nhau
D. Căn cứ vào tần số chưa thể so sánh độ cao của âm Đáp án ... | [
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678,
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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,
14542,
31214,
29876,
5777,
31500,
29884,
872,
29875,
29901,
13,
29909... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Vectơ nào dưới đây là một vectơ chỉ phương của đường thẳng đi qua gốc tọa độ O(0; 0) và điểm M(a; b)?
A. (– a; – b);
B. (a; b);
C. (1; a);
D.(1; b). Đáp án là: B. (a; b); </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho mạch điện như hình vẽ, trong đó nguồn điện có suất điện động 30 V và điện trở trong 3 Ω, các điện trở R 1 = 12 Ω, R 2 = 27 Ω, R 3 = 18 Ω, vôn kế V có điện trở rất lớn. Số chỉ của vôn kế là
A. 25 V.
B. 23,6 V.
C. 22,5 V.
D. 29 V. Đáp á... | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trường hợp nào sẽ dẫn tới sự di truyền liên kết?
A. Các cặp gen qui định các cặp tính trạng nằm trên các cặp nhiễm sắc thể khác nhau.
B. Các cặp gen qui định các cặp tính trạng xét tới cùng nằm trên 1 cặp nhiễm sắc thể.
C.... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word that has different pronunciation from others.
A. fl oo d
B. typh oo n
C. kangar oo
D. c oo l Đáp án là: A. fl oo d </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một hạt bụi tích điện có khối lượng m = 10 -8 g nằm cân bằng trong điện trường đều có hướng thẳng đứng xuống dưới và có cường độ E = 1 000 V/m, lấy g = 10 m/s 2. Điện tích của hạt bụi là
A. -10 -13 C.
B. 10 -13 C.
C. -10 -10 C.
D. 1... | [
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<s> Chọn đáp án đúng với câu hỏi: Chất nào sau đây là chất điện li yếu?
A. NH 4 Cl.
B. Na 2 CO 3
C. HNO 3.
D. NH 3. Đáp án là: D. NH 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The author suggests that melanin _____.
A. is necessary for the production of vitamin-D
B. is beneficial in sunless climates.
C. helps protect fair-skinned people
D. is a synthetic product Đáp án là: D. is a synthetic product </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
A. vacation
B. nation
C. question
D. exhibition Đáp án là: C. question </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dấu gạch ngang khác dấu gạch nối như thế nào?
A. Dấu gạch nối không phải là một dấu câu. Nó chỉ dùng để nối các tiếng trong những từ mượn gồm nhiều tiếng.
B. Dấu gạch nối ngắn hơn dấu gạch ngang.
C. Dấu gạch ngang được s... | [
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<s> Chọn đáp án đúng với câu hỏi: Tất cả các kim loại trong dãy nào sau đây tác dụng được với H 2 O ở nhiệt độ thường?
A. Fe, Zn, Li, Sn;
B. Cu, Pb, Rb, Ag;
C. K, Na, Ca, Ba;
D. Al, Hg, Cs, Sr. Đáp án là: C. K, Na, Ca, Ba; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The aim at all times is to have a(n) ______ estimate of the final cost.
A. true
B. precise
C. accurate
D. correct Đáp án là: C. accurate </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về quá trình hấp thụ và vận chuyển nước trong cây, phát biểu nào sai?
A. Cây hấp thụ nước qua hệ lông hút nhờ sự chênh lệch thế nước tăng dần từ đất đến mạch gỗ.
B. Nhờ lực đẩy của rễ mà nước được đẩy tư... | [
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<s> Chọn đáp án đúng với câu hỏi: Điền số còn thiếu vào chỗ trốngĐộ dài cạnh9 cmDiện tích hình vuông?
A. 36 cm^2
B. 81 cm^2
C. 36 cm
D. 81 cm Đáp án là: B. 81 cm^2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: and which by their position and association can (34) _____ men to tears.
A. take
B. send
C. break
D. move Đáp án là: D. move </s> | [
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865,
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274,
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29884,
298,
228,
190,
146,
29875,
29901,
322,
607,
491,
1009,
2602,
322,
15477,
508,
313,
29941,
29946,
2989... | [
1,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Sóng dừng trên dây AB có chiều dài l = 32 cm với đầu B cố định. Tần số dao động của dây là f = 50 Hz, tốc độ truyền sóng trên dây là 4 m/s. Số nút và số bụng trên dây AB là
A. 9 nút, 8 bụng.
B. 8 nút, 8 bụng.
C. 4 nút, 4 bụng.
D. 5 nú... | [
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11... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: The word “handle” in parapgraph 2 mostly means ____________.
A. deal with
B. gain benefits from
C. lend a hand to
D. point at Đáp án là: A. deal with </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một dây dẫn trong không khí được uốn thành vòng tròn, bán kính R = 0,1m có I = 3,2 A chạy qua. Mặt phẳng vòng dây trùng với mặt phẳng kinh tuyến từ. Tại tâm vòng dây treo một kim nam châm nhỏ. Tính góc quay của kim nam châm khi ngắt dò... | [
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29... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Lý do nào không chính xác về sự phân bố dân cư không đồng đều của Hoa Kì?
A. Thành phần dân cư phức tạp
B. Lịch sử định cư
C. Sự phát triển kinh tế
D. Điều kiện tự nhiên khác nhau Đáp án là: A. Thành phần dân cư phức tạp </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 each of the following questions. If we plant more trees, we can ______________ the effects of global warming and climate change.
A. go down
B. increase
C. end up
D. reduce Đáp án là: D. reduce </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mảnh vải xanh dài 75 dm. Mảnh vải đỏ dài hơn mảnh vải xanh 17 dm. Hỏi mảnh vải đỏ dài bao nhiêu đề - xi – mét?
A. 82 dm
B. 92 dm
C. 93 dm
D. 58 dm Đáp án là: B. 92 dm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đồ thị nào trong hình vẽ có thể biểu diễn sự phụ thuộc của lực tương tác giữa hai điện tích điểm vào khoản cách giữa chúng
A. Hình 1.
B. Hình 2.
C. Hình 3.
D. Hình 4. Đáp án là: D. Hình 4 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Vị trí địa lí của khu vực Đông Nam Á có điểm gì đặc biệt?
A. Nằm ở vị trí “ngã tư đường” giao thương quốc tế.
B. Là cầu nối giữa Đại Tây Dương và Ấn Độ Dương.
C. Khu vực duy nhất của châu Á không tiếp giáp với biển.
D. ... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn mệnh đề sai Trong một chu kì của bảng tuần hoàn, đi từ trái sang phải
A. năng lượng ion hóa I 1 giảm dần
B. bán kính nguyên tử giảm dần
C. độ âm điện tăng dần
D. tính kim loại giảm dần Đáp án là: A. năng lượng ion hóa I 1 giảm da... | [
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<s> Chọn đáp án đúng với câu hỏi: Nguồn lực nước ngoài bao gồm các yếu tố nào sau đây?
A. Khoa học - kĩ thuật và công nghệ, nguồn vốn từ nước ngoài; đường lối chính sách.
B. Khoa học - kĩ thuật và công nghệ, nguồn vốn, kinh nghiệm tổ chức và quản lí sản xu... | [
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<s> Chọn đáp án đúng với câu hỏi: Giá trị biểu thức √(0,16)−√(0,09) là:
A. 0,07;
B. 0,1;
C. –0,1;
D. –0,7. Đáp án là: C. –0,1; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Questions 11-20 Write the word whose underlined part is pronounced differently from the other three in each of the following questions
1. A. aut u mn
B. s u mmer
C. s u nny
D. m u ch Đáp án là: A. aut u mn </s> | [
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<s> Chọn đáp án đúng với câu hỏi: According to the passage, dried foods are most useful for ______.
A. explorers who are underweight
B. soldiers who are not in battle
C. people who are on the move
D. housewives who have little storage space Đáp án là: C. people who are on the move </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the correct answers A, B, C or D. Do more exercise...... you want to lose weight.
A. so
B. and
C. of
D. if Đáp án là: D. Do more exercise </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
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190,
146,
29875,
29901,
14542,
852,
278,
1959,
6089,
319,
29892,
350,
29892,
315,
470,
360,... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: Dạng đột biến nào sau đây không phải là đột biến cấu trúc nhiễm sắc thể?
A. thay thế một cặp nucleotit
B. Mất đoạn nhiễm sắc thể.
C. Lặp đoạn nhiễm sắc thể.
D. Đảo đoạn nhiễm sắc thể. Đáp án là: A. thay thế một cặp nucleotit ... | [
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,
7266,
31214,
865,
29871,
30128,
29877,
31214,
31500,
29873,
289,
347,... | [
1,
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<s> Chọn đáp án đúng với câu hỏi: We have learnt English________2001.
A. for
B. since
C. in
D. during Đáp án là: B. since </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,
1334,
505,
24298,
593,
4223,
14365,
29906,
29900,
29900,
29896,
29889... | [
1,
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