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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. humanity
B. hour
C. vehicle
D. exhaustion Đáp án là: A. humanity </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phenol tan nhiều trong lượng dư dung dịch nào sau đây?
A. Dung dịch Br 2.
B. Dung dịch NaOH.
C. Dung dịch HCl.
D. Dung dịch Na 2 SO 4. Đáp án là: B. Dung dịch NaOH. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I ________ him in the library after work, and we a great conversation about Hemingway.
A. came into
B. came across
C. got into
D. carried out Đáp án là: B. came across </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một mảnh vườn hình vuông có diện tích bằng diện tích của một hình chữ nhật có chiều dài là 9 m và chiều rộng là 4 m. Hỏi cạnh của mảnh vườn hình vuông đó bằng bao nhiêu?
A. 6 m;
B. 8 m;
C. 7 m;
D. 36 m. Đáp án là: A. 6 m; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vai trò quan trọng nhất của tầng ozon là
A. Hấp thụ tia cực tím từ bức xạ Mặt Trời.
B. Hạn chế hiện tượng hiệu ứng nhà kính.
C. Chống ô nhiễm môi trường không khí.
D. Bảo vệ sinh vật trên Trái Đất. Đáp án là: A. Hấp thụ tia cực tím từ bức xạ Mặt Trời. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: you have to send a letter of application and your resumes to the company to express your interest in the job and........(37)....... that you might be the most suitable candidate for the position.
A. shown
B. to show
C. showing
D. showed Đáp án là: B. to show </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hỗn hợp T gồm ba chất hữu cơ X, Y, Z (50 < M X < M Y < M Z và đều tạo nên từ các nguyên tố C, H, O). Đốt cháy hoàn toàn m gam T thu được H 2 O và 2,688 lít khí CO 2 (đktc). Cho m gam T phản ứng với dung dịch NaHCO 3 dư, thu được 1,568 lít khí CO 2 (đktc). Mặt khác, cho m gam T phản ứng hoàn toàn với lượng dư dung dịch AgNO 3 trong NH 3, thu được 10,8 gam Ag. Giá trị của m là
A. 4,6
B. 4,8
C. 5,2
D. 4,4 Đáp án là: A. 4,6 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tính đến năm 2020 rừng nhiệt đới A-ma-dôn đã mất bao nhiêu diện tích rừng nguyên sinh?
A. 3,24 triệu ha
B. 2,3 triệu ha
C. 5 triệu ha
D. 1,2 triệu ha Đáp án là: B. 2,3 triệu ha </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các nhân tố tiến hóa dưới đây, có bao nhiêu nhân tố tiến hóa vừa làm thay đổi tần số alen vừa làm thay đổi thành phần kiểu gen của quần thể? (1) Chọn lọc tự nhiên. (2) Đột biến. (3) Giao phối không ngẫu nhiên. (4) Các yếu tố ngẫu nhiên. (5) Di-nhập gen.
A. 1
B. 2
C. 4
D. 3 Đáp án là: C. 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: I have nearly finished reading the book. There are only a few................. left.
A. pages
B. slices
C. sheets
D. pieces Đáp án là: A. pages </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tiến hành các thí nhiệm: (1) Nhúng 1 thanh Cu và dung dịch FeCl 3 (2) Nhúng thanh Al dư vào dung dịch FeCl 3 (3) Nhúng thanh hợp kim Al và Cu vào dung dịch HCl loãng (4) Nhúng thanh Ag vào dung dịch H 2 SO 4 loãng Số trường hợp xuất hiện ăn mòn điện hoá là
A. 1
B. 4
C. 2
D. 3 Đáp án là: C. 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the best sentence built from the given words or phrases. No point/ join/ club/ full/ eccentrics.//
A. There is no point in joining that club because it seems to be full with eccentrics.
B. There is no point of joining that club because it seems to be full of eccentrics.
C. There is no point in joining that club because it seems to be full of eccentrics.
D. It is no point in joining that club because it seems to be full of eccentrics. Đáp án là: C. There is no point in joining that club because it seems to be full of eccentrics. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngoài gió mùa, nước ta còn chịu tác động của một loại gió hoạt động quanh năm là
A. gió tín phong
B. gió biển
C. gió phơn tây nam
D. gió tây ôn đới Đáp án là: A. gió tín phong </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “consecutive” in paragraph 2 mostly means ____________.
A. interrupted
B. solitary
C. successive
D. intermittent Đáp án là: C. successive </s> | [
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3471,
11067,
30024,
297,
14880,
29871,
29906,
... | [
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<s> Chọn đáp án đúng với câu hỏi: Trộn 300 ml dung dịch NaOH 0,05M với 200 ml dung dịch H 2 SO 4 0,05 M thu được dung dịch X, giá trị pH của dung dịch X là:
A. pH = 1.
B. pH = 3.
C. pH = 2.
D. pH = 5. Đáp án là: C. pH = 2. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khí thực hiện công trong quá trình nào sau đây?
A. Nhiệt lượng khí nhận được lớn hơn độ tăng nội năng của khí.
B. Nhiệt lượng khí nhận được nhỏ hơn độ tăng nội năng của khí.
C. Nhiệt lượng khí nhận được bằng độ tăng nội năng của khí.
D. Nhiệt lượng khí nhận được lớn hơn hoặc bằng độ tăng nội năng của khí. Đáp án là: A. Nhiệt lượng khí nhận được lớn hơn độ tăng nội năng của khí. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật dao động điều hòa, trên trục Ox. Đồ thị nào dưới dây biểu diễn đúng sự phụ thuộc của gia tốc a và li độ x của vật?
A.
B.
C.
D. Đáp án là: B. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có các dung dịch không màu đựng trong các lọ riêng biệt, không dán nhãn gồm: ZnSO 4, Mg(NO 3 )2, Al(NO 3 )3. Để phân biệt các dung dịch trên có thể dùng:
A. Quì tím
B. dd NaOH
C. dd Ba(OH) 2
D. dd BaCl 2 Đáp án là: C. dd Ba(OH) 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: His wife said to him: “Write to me as often as you can”.
A. His wife told him to write to her as often as he can
B. His wife told him to write to her as often as he could.
C. His wife told him writing to her as often as he could.
D. His wife told him writing to her as often as he can. Đáp án là: B. His wife told him to write to her as often as he could. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong không gian với hệ trục tọa độ Oxyz cho hai điểm A(-2;1;0) và B với B∈Ox,B∈Oy,B∈Oz. Tính độ dài của AB.
A. AB=√(5)
B. AB=√(3)
C. AB=√(10)
D. AB=2√(3) Đáp án là: A. AB=√(5) </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. Cả 3 đáp án trên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: In the second passage, the word ‘ prophesied’ is closest in meaning to _______.
A. affiliated
B. precipitated
C. terminated
D. foretold Đáp án là: D. foretold </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cơ thể có kiểu gen aaBbddEEGg là cơ thể dị hợp về bao nhiêu cặp gen?
A. 1
B. 2
C. 3
D. 5 Đáp án là: B. 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: My mother always drives.....................
A. careful
B. carefully
C. slow
D. fastly Đáp án là: B. carefully </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phát biểu nào sau đây không đúng với tài nguyên đất của Đồng bằng sông Cửu Long?
A. Đất bị xâm thực, xói mòn và bạc màu chiếm diện tích rộng
B. Đất phèn và đất mặn có diện tích lớn hơn đất phù sa ngọt
C. Đất phù sa ngọt phân bố thành dải dọc sông Tiền, sông Hậu.
D. Một vài loại đất thiếu dinh dưỡng hoặc đất quá chặt, khó thoát nước Đáp án là: A. Đất bị xâm thực, xói mòn và bạc màu chiếm diện tích rộng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tính biến thiên enthalpy của phản ứng sau: NaHCO 3 (s) → Na 2 CO 3 (s) + CO 2 (g) + H 2 O(l) Biết: f \[H_{298}^o\](NaHCO 3 ) = -950,8 kJ mol -1 ; f \[H_{298}^o\](Na 2 CO 3 ) = -1130,7 kJ mol -1 ; f \[H_{298}^o\](CO 2 ) = -393,5 kJ mol -1 ; f \[H_{298}^o\](H 2 O) = -285,8 kJ mol -1.
A. -102,8 kJ.
B. 102,8 kJ.
C. 91,6 kJ.
D. -91,6 kJ. Đáp án là: C. 91,6 kJ. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tập nghiệm S của phương trình (√(x−1))/(x+2)=(−x−11)/(x+2)+2 là:
A. S=(−1;1);
B. S=(−1);
C. S=(1);
D. S = {10}. Đáp án là: D. S = {10} </s> | [
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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,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong việc phát triển cây công nghiệp lâu năm ở Đông Nam Bộ, ngoài thủy lợi thì biện pháp quan trọng tiếp theo là
A. áp dụng cơ giới hóa trong sản xuất.
B. tăng cường phân bón và thuốc trừ sâu.
C. thay đổi cơ cấu cây trồng.
D. nâng cao trình độ cho nguồn lao động. Đáp án là: C. thay đổi cơ cấu cây trồng. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi thuỷ phân peptit có công thức hoá học: H 2 N-CH(CH 3 )-CONH-CH 2 -CONH-CH 2 -CONH-CH 2 -CONH-CH(CH 3 )-COOH thì sản phẩm thu được có tối đa bao nhiêu peptit có phản ứng màu biure?
A. 10.
B. 4.
C. 2.
D. 5. Đáp án là: D. 5 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Thế mạnh chủ yếu của khu vực đồi núi nước ta là
A. cây công nghiệp hằng năm.
B. cây công nghiệp lâu năm.
C. cây lương thực.
D. hoa màu. Đáp án là: B. cây công nghiệp lâu năm. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong không gian Oxyz, cho mặt phẳng (P) có phương trình là x - 2y + 2 = 0. Vectơ nào dưới đây là một vectơ pháp tuyến của mặt phẳng (P):
A. n_1→=(1;-2;2)
B. n_2→=(1;-2;1)
C. n_3→=(1;-2;0)
D. n_4→=(1;0;-2) Đáp án là: C. n_3→=(1;-2;0) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hướng đi của C. Cô-lôm-bô có điểm gì khác với các nhà phát kiến địa lí khác?
A. Đi xuống hướng nam
B. Đi sang hướng đông
C. Đi về hướng tây
D. Ngược lên hướng bắc Đáp án là: C. Cô-lôm-bô có điểm gì khác với các nhà phát kiến địa lí khác?A. Đi xuống hướng namB. Đi sang hướng đông </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một đám nguyên tử hiđrô đang ở trạng thái cơ bản. Khi chiếu bức xạ có tần số f 1 vào đám nguyên tử này thì chúng phát ra tối đa 3 bức xạ. Khi chiếu bức xạ có tần số f 2 vào đám nguyên tử này thì chúng phát ra tối đa 10 bức xạ. Biết năng lượng ứng với các trạng thái dừng của nguyên tử hiđrô được tính theo biểu thức E n = - E 0 n 2 (E 0 là hằng số dương, n = 1,2,3,...). Tỉ số f 1 f 2 là
A.10/3.
B. 27/25.
C. 3/10.
D. 25/27. Đáp án là: D. 25/27 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Until the firemen arrived to help, we had already put out the fire.
A. until
B. arrived
C. had
D. put out Đáp án là: A. until </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một bóng thám không được chế tạo để có thể tăng bán kính lên tới 10m khi bay ở tầng khí quyển có áp suất 0,03atm và nhiệt độ 200K. Hỏi bán kính của bóng khi bơm, biết bóng được bơm khí ở áp suất 1 atm và nhiệt độ 300K?
A. 3,75m
B. 3,45m
C. 4,75cm
D. 3,56m Đáp án là: D. 3,56m </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm cụm từ thích hợp điền vào chỗ trống: Gương cầu lõm có mặt phản xạ là mặt...............
A.ngoài của một phần mặt cầu
B.cong
C. trong của một phần mặt cầu
D.lõm Đáp án là: C. trong của một phần mặt cầu </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 8, cho biết crôm có ở nơi nào sau đây?
A. Cổ Định.
B. Quỳ Châu.
C. Thạch Khê.
D. Tiền Hải. Đáp án là: A. Cổ Định. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Công thức chung của oxit kim loại thuộc nhóm IIA là
A. R 2 O 3
B. RO 2
C. R 2 O
D. RO Đáp án là: D. RO </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hai lực đồng quy F 1 và F 2 hợp với nhau một góc α, hợp lực của hai lực này có độ lớn là
A. F = F 1 2 + F 2 2
B. F = F 1 - F 2
C. F = F 1 + F 2
D. F = F 1 2 + F 2 2 + 2 F 1 F 2 cos α Đáp án là: D. F = F 1 2 + F 2 2 + 2 F 1 F 2 cos α </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Biểu hiện chứng tỏ Liên bang Nga từng là trụ cột trong Liên bang Xô viết là
A. Liên bang Nga chiếm tỉ trọng lớn nhất về diện tích trong Liên Xô.
B. Liên bang Nga chiếm tỉ trọng lớn nhất về sản lượng các ngành kinh tế trong Liên Xô.
C. Liên bang Nga chiếm tỉ trọng lớn nhất về dân số trong Liên Xô.
D. Liên bang Nga chiếm tỉ trọng lớn nhất về số vốn đầu tư trong toàn Liên Xô. Đáp án là: B. Liên bang Nga chiếm tỉ trọng lớn nhất về sản lượng các ngành kinh tế trong Liên Xô. </s> | [
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52... | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật dao động với tần số 5Hz. Tác dụng vào vật một ngoại lực tuần hoàn có tần số thay đổi được. Hãy so sánh biên độ dao động của vật khi tần số của ngoại lực có giá trị lần lượt bằng: f 1 = 2Hz; f 2 = 4Hz; f 3 = 7,5Hz ; f 4 = 5Hz.
A. A 1 < A 3 < A 2 < A 4
B. A 3 < A 1 < A 4 < A 2
C. A 2 < A 1 < A 4 < A 3
D. A 1 < A 2 < A 3 < A 4 Đáp án là: A. A 1 < A 3 < A 2 < A 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vận tốc của ô tô là 36km/h cho biết điều gì? Hãy chọn câu đúng
A. Ô tô chuyển động được 36km
B. Ô tô chuyển động trong 1 giờ
C. Trong 1 giờ ô tô đi được 36km
D. Ô tô đi 1km trong 36 giờ Đáp án là: C. Trong 1 giờ ô tô đi được 36km </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Số Một nghìn không trăm linh ba phẩy sáu mươi bảy viết là:
A. 1103,67
B. 1300,67
C. 1003,67
D. 1030,67 Đáp án là: C. 1003,67 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: What do the intersecting lines in the base symbolize?
A. Architect’s plans for the hidden passage.
B. Pathways of the great solar body.
C. Astrological computation.
D. Dates of important events taking place throughout time. Đáp án là: D. Dates of important events taking place throughout time </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mục tiêu cuộc đấu tranh của các nước Mĩ latinh là:
A. Xóa bỏ chế độ phong kiến.
B. Xóa bỏ chủ nghĩa thực dân kiểu cũ.
C. Xóa bỏ chủ nghĩa phân biệt chủng tộc.
D. Xóa bỏ chủ nghĩa thực dân kiểu mới. Đáp án là: D. Xóa bỏ chủ nghĩa thực dân kiểu mới </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong mạch dao động điện từ LC với cuộn dây có điện trở R. Sự tắt dần nhanh hay chậm phụ thuộc vào.
A. Tần số dao động riêng của mạch.
B. Điện trở R của cuộn dây
C. Điện dung C
D. Độ tự cảm Đáp án là: B. Điện trở R của cuộn dây </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dòng điện qua một ống dây giảm đều theo thời gian từ I 1 = 1,2 (A) đến I 2 = 0,4 (A) trong thời gian 0,2 (s). Ống dây có hệ số tự cảm L = 0,4 (H). Suất điện động tự cảm trong ống dây là:
A. 0,8 (V).
B. 1,6 (V).
C. 2,4 (V).
D. 3,2 (V). Đáp án là: B. 1,6 (V). </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hòa tan hoàn toàn m gam nhôm trong dung dịch HNO 3 loãng thu được hỗn hợp khí gồm 0,15 mol N 2 O và 0,2 mol NO và dung dịch không chứa muối NH 4 NO 3. Giá trị của m là
A. 8,1 gam
B. 16,2 gam
C. 10,8 gam
D. 13,5 gam Đáp án là: B. 16,2 gam </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tứ giác nào có hai đường chéo bằng nhau
A. Hình thang cân
B. Hình chữ nhật
C. Hình bình hành
D. Cả A, B đều đúng Đáp án là: D. Cả A, B đều đúng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho phép lai P: AaBbDD × aaBbDd. Biết rằng không xảy ra đột biến. Theo lý thuyết ở F 1 số cá thể mang kiểu gen dị hợp tử về một cặp gen chiếm tỉ lệ
A. 50%
B. 87,5%
C. 37,5%
D. 12,5% Đáp án là: C. 37,5% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chính sách đối ngoại của Liên Xô từ năm 1945 đến giữa những năm 70 của thế kỉ XX là gì?
A. Thực hiện chính sách đối đầu với Mĩ, lãnh đạo các nước xã họi chủ nghĩa chống lại Mĩ.
B. Hòa hoãn, bắt tay với Mĩ cùng thống trị thế giới.
C. Chung sống hòa bình, quan hệ hữu nghị với tất cả các nước, ủng hộ cuộc chiến tranh chống chủ nghĩa thực dân.
D. Coi Mĩ là đối tác chiến lược, cùng hợp tác phát triển. Đáp án là: C. Chung sống hòa bình, quan hệ hữu nghị với tất cả các nước, ủng hộ cuộc chiến tranh chống chủ nghĩa thực dân. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các dãy chất dưới đây, dãy chất nào tác dụng được với dung dịch axit sunfuric loãng?
A. CuO, Cu, K 2 O, CO.
B. SO 2, CuO, Fe, CO 2.
C. KOH, CuO, Fe, BaCl 2
D. CuO, CO 2, MgO, K 2 O. Đáp án là: C. KOH, CuO, Fe, BaCl 2 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một khung dây phẳng, diện tích 25 ( c m 2 ) gồm 10 vòng dây, khung dây được đặt trong từ trường có cảm ứng từ vuông góc với mặt phẳng khung và có độ lớn tăng dần từ 0 đến 2,4.10 - 3 (T) trong khoảng thời gian 0,4 (s). Suất điện động cảm ứng xuất hiện trong khung trong khoảng thời gian có từ trường biến thiên là:
A. 1,5.10 - 2 (mV).
B. 1,5.10 - 5 (V).
C. 0,15 (mV).
D. 0,15 (μV) Đáp án là: C. 0,15 (mV). </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phương trình √(3)sinx+cosx=1/(cosx) có nghiệm là
A. (x=kπx=(π)/3+kπ)(k∈Z).
B. (x=k2πx=(π)/3+k2π)(k∈Z).
C. (x=(kπ)/2x=(π)/3+kπ)(k∈Z).
D. x=kπ(k∈Z). Đáp án là: A. (x=kπx=(π)/3+kπ)(k∈Z). </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cô giáo chia đều các học sinh trong lớp thành 5 nhóm, mỗi nhóm 6 học sinh thì còn thừa ra 2 học sinh. Hỏi lớp đó có bao nhiêu học sinh?
A. 30 học sinh
B. 28 học sinh
C. 58 học sinh
D. 32 học sinh Đáp án là: D. 32 học sinh </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Loại khoáng sản có trữ lượng lớn và chất lượng vào loại tốt nhất Đông Nam Á ở Trung du và miền núi Bắc Bộ là
A. than antraxit.
B. apatit.
C. bôxít.
D. sắt. Đáp án là: A. than antraxit. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khu vực Trung Á được thừa hưởng nhiều giá trị văn hóa của cả phương Đông và phương Tây nhờ
A. nằm ở vị trí tiếp giáp giữa châu Á và châu Âu.
B. đã từng bị người Trung Hoa và các đế quốc tư bản chiếm đóng.
C. nằm trên “ con đường tơ lụa” của thế giới trước đây.
D. có hai tôn giáo lớn của thế giới là Thiên chúa giáo và Hồi giáo. Đáp án là: C. nằm trên “ con đường tơ lụa” của thế giới trước đây. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hòa tan 4,59 gam Al bằng dung dịch HNO 3 thu được hỗn hợp khí NO và N 2 O có tỉ khối so với H 2 bằng 16,75. Thể tích NO và N 2 O thu được ở đktc là:
A. 2,24 lít và 6,72 lít
B. 2,016 lít và 0,672 lít
C. 0,672 lít và 2,016 lít
D. 1,972 lít và 0,448 lít Đáp án là: B. 2,016 lít và 0,672 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sau Chiến tranh thế giới thử hai, kinh tế Anh xếp sau các nước nào trong khối tư bản chủ nghĩa?
A. Đảng Cộng hòa và Đảng Dân chủ
B. Đảng Tự do và Đảng Bảo thủ
C. Đảng Bảo thủ và Công đảng
D. Đảng Quốc đại và Đảng Bảo thủ Đáp án là: A. Đảng Cộng hòa và Đảng Dân chủ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Với mọi số nguyên n, đa thức n^2(3 – 2n) – n(3n – 2n^2 – 3) luôn chia hết cho số nào dưới đây?
A. 2
B. 3
C. 4
D. 5 Đáp án là: B. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong không gian Oxyz cho A(1;2;0), B(3;-1;1) và C(1;1;1) Tính diện tích S của tam giác ABC.
A. S = 1
B. S=√(3)
C. S=1/2
D. S=√(2) Đáp án là: B. S=√(3) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sắp xếp các amin theo thứ tự bậc amin tăng dần : etylmetylamin (1); etylđimetylamin (2) ; isopropylamin (3).
A. (1), (2), (3).
B. (2), (3),(1).
C. (3), (1), (2).
D. (3), (2), (1). Đáp án là: C. (3), (1), (2). </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bạn Hà nặng 45kg đứng thẳng hai chân trên mặt sàn lớp học, biết diện tích tiếp xúc với mặt sàn của hai bàn chân là 0,010m 2. Áp suất mà bạn Hà tác dụng lên mặt sàn là:
A. 45000 N/m 2.
B. 450000 N/m 2.
C. 90000 N/m 2.
D. 900000 N/m 2. Đáp án là: A. 45000 N/m 2. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Find one odd word A, B, C or D.
A. dinner
B. meal
C. breakfast
D. lunch Đáp án là: B. meal </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở một vùng biển, năng lượng bức xạ chiếu xuồng mặt nước đạt 3.106 Kcal / m 2 / ngày. Tảo X chỉ đồng hóa được 3% tổng năng lượng đó. Giáp xác trong hồ khai thác dược 40% năng lượng tích lũy trong tảo X còn cá ăn giáp xác khai thác được 0.15% năng lựợng của giáp xác. Hiệu suất sử dụng năng lượng của bậc dinh dưỡng cuối cùng so với tổng năng lượng ban đầu là:
A. 0.0018%
B. 0,008%
C. 0,08%.
D. 0.00018%. Đáp án là: A. 0.0018% </s> | [
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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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1,
1,
1,
1,
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: Nung nóng một hỗn hợp gồm CaCO 3 và MgO tới khối lượng không đổi, thì số gam chất rắn còn lại chỉ bằng 2/3 số gam hỗn hợp trước khi nung. Vậy trong hỗn hợp ban đầu thì CaCO 3 chiếm phần trăm theo khối lượng là :
A. 75,76%
B. 24,24%
C. 66,67%
D. 33,33% Đáp án là: A. 75,76% </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dung dịch nào sau đây làm phenolphtalein đổi màu?
A. glyxin
B. axit axetic
C. metylamin
D. alanin Đáp án là: C. metylamin </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Câu nào trong các câu dưới đây có chủ ngữ là động từ?
A. Đi học là niềm vui của trẻ em.
B. Mặt trời ló rạng trên mặt biển vẫn còn hơi sương.
C. Nắng e ấp trên các cành cây còn ướt đẫm hơi sương.
D. Mùa xuân mong ước đã đến. Đáp án là: A. Đi học là niềm vui của trẻ em. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong 20 năm đầu (1885 - 1905), Đảng Quốc đại ở Ấn Độ phản đối phương pháp đấu tranh
A. ôn hòa
B. thỏa hiệp
C. ngoại giao
D. bạo lực Đáp án là: D. bạo lực </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật có khối lượng m = 8 kg đang chuyển động với gia tốc có độ lớn a = 2 m / s 2. Hợp lực tác dụng lên vật có độ lớn bằng
A. 16 N.
B. 8 N.
C. 4N.
D. 32 N. Đáp án là: A. 16 N. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mỗi chúng ta cần làm gì để tăng vốn từ?
A. Quan sát lắng nghe lời nói hằng ngày của những người xung quanh.
B. Nghe, học tập trên các phương tiện thông tin đại chúng.
C. Đọc sách, báo, các tác phẩm văn học mẫu mực, ghi chép từ ngữ mới.
D. Cả ba phương án trên Đáp án là: D. Cả ba phương án trên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong giao tiếp, nhiều khi những câu nghi vấn như “Anh ăn cơm chưa?”, “Cậu đọc sách đấy à?”, “Em đi đâu đấy?” không nhằm để hỏi. Vậy trong những trường hợp đó, câu nghi vấn dùng để làm gì?
A. Bộc lộ tình cảm, cảm xúc
B. Dùng để chào
C. Cầu khiến
D. Đe dọa Đáp án là: B. Dùng để chào </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Để gây tiếng vang trong nước, thức tỉnh đồng bào, Việt Nam Quang phục hội đã cử người bí mật về nước để trừ khử những tên thực dân đầu sỏ, kể cả Toàn quyền
A. Đờ Cuốc-xi
B. Ri-vi-e
C. An-be Xa-rô
D. Gác-ni-ê Đáp án là: C. An-be Xa-rô </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Auxin có tác động gì đến thân và rễ cây?
A. Auxin làm tế bào giãn dài và không phân chia
B. Auxin làm tế bào lâu già.
C. Auxin kích thích tế bào lớn lên và kích thích tốc độ phân chia nhanh của tế bào.
D. Cả A, B và C Đáp án là: C. Auxin kích thích tế bào lớn lên và kích thích tốc độ phân chia nhanh của tế bào. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chủ yếu vùng núi Đông Bắc là nơi lạnh nhất nước ta do
A. địa hình có độ cao lớn nhất nước ta.
B. vị trí nằm xa biển nhất nước ta.
C. tác động của gió mùa Đông Bắc.
D. nằm xa Xích đạo nhất cả nước. Đáp án là: C. tác động của gió mùa Đông Bắc. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trên bóng đèn dây tóc Đ 1 có ghi (220V - 100W), trên bóng đèn Đ 2 có ghi (220V - 75W). Mắc hai bóng đèn trên nối tiếp nhau rồi mắc đoạn mạch này vào hiệu điện thế 220V. Tính công suất điện của đoạn mạch nối tiếp này, cho rằng điện trở của mỗi đèn khi đó bằng 50% điện trở của đèn đó khi sáng bình thường.
A. 96,8W
B. 79,6W
C. 84,5W
D. 85,7W Đáp án là: A. 96,8W </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nào sau đây là yêu cầu cơ bản của thân bài?
A. Dẫn dắt, nêu trọng tâm và giới hạn vấn đề ngắn gọn
B. Gây được sự chú ý của người đọc về vấn đề sẽ viết
C. Đưa ra được những luận điểm, luận cứ, lập luận hợp lí
D. Đưa ra những chi tiết cụ thể, sinh động về nội dung sẽ trình bày Đáp án là: C. Đưa ra được những luận điểm, luận cứ, lập luận hợp lí </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Scuba diving is an excellent way to see some very beautiful sites: coral diving sites with their colorful sea life are the most famous but other scuba diving (3)________include shipwrecks and caverns.
A. impression
B. amusement
C. recreation
D. attractions Đáp án là: D. attractions </s> | [
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2522,
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1933,
292,
338,
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982,
304,
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777,
1407,... | [
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<s> Chọn đáp án đúng với câu hỏi: Biên độ dao động cưỡng bức không thay đổi khi thay đổi
A. biên độ của ngoại lực.
B. tần số của ngoại lực.
C. pha ban đầu của ngoại lực.
D. lực ma sát của môi trường. Đáp án là: C. pha ban đầu của ngoại lực. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “Một thước núi, một tấc sông của ta, lẽ nào lại nên vứt bỏ?... Nếu ngươi dám đem một thước một tấc đất của Thái Tổ làm mồi cho giặc, thì tội phải chu di”. Lời căn dặn trên vua Lê Thánh Tông phản ánh điều gì?
A. Quyết tâm bảo vệ chủ quyền lãnh thổ của nhà Lê.
B. Chính sách ngoại giao mềm dẻo của triều Lê sơ.
C. Quyết tâm gìn giữ nền độc lập dân tộc của nhà Lê.
D. Chính sách đại đoàn kết dân tộc của nhà Lê sơ. Đáp án là: A. Quyết tâm bảo vệ chủ quyền lãnh thổ của nhà Lê. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các loài động vật sau đây, có bao nhiêu loài có hai vòng tuần hoàn? (1) Cá (2) Ếch (3) Bò sát (4) Chim (5) Thú (6) Chân khớp (7) Ruột khoang
A. 4
B. 5
C. 6
D. 7 Đáp án là: A. 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “Dòng sông mới điệu làm sao/ Nắng lên mặc áo lụa đào thướt tha” là câu thơ miêu tả?
A. Hoạt động
B. Hình dáng
C. Tính chất
D. Tính cách Đáp án là: D. Tính cách </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một số chia cho 4 rồi lấy kết quả trừ đi 23018 thì bằng 56.
A. 92 296
B. 92 563
C. 99 296
D. 99 297 Đáp án là: A. 92 296 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cấu trúc không gian của phân tử ADN có đường kính không đổi do
A. Một bazo nito có kích thước nhỏ (A hoặc G) liên kết bổ sung với một bazo nito có kích thước lớn (T hoặc X)
B. Các nucleotit trên một mạch đơn liên kết theo nguyên tắc đa phân
C. Các bazo nito giữa hai mạch đơn liên kết với nhau bằng liên kết hidro
D. Hai bazo nito có kích thước bé liên kết với nhau, hai bazo nito có kích thước lớn liên kết với nhau Đáp án là: A. Một bazo nito có kích thước nhỏ (A hoặc G) liên kết bổ sung với một bazo nito có kích thước lớn (T hoặc X) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chuyển động tự quay quanh trục của Trái Đất không phải là nguyên nhân chính gây nên hiện tượng
A. sự luân phiên ngày đêm trên Trái Đất.
B. giờ trên Trái Đất và đường chuyển ngày.
C. lệch hướng chuyển động của các vật thể.
D. khác nhau giữa các mùa trong một năm. Đáp án là: D. khác nhau giữa các mùa trong một năm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngày 2-9-1945, ở Việt Nam đã diễn ra sự kiện lịch sử trọng đại gì?
A. Cách mạng tháng Tám thành công trên cả nước
B. Hồ Chí Minh đọc bản Tuyên ngôn độc lập, tuyên bố sự ra đời của nước Việt Nam Dân chủ cộng hòa
C. Vua Bảo Đại tuyên bố thoái vị
D. Thực dân Pháp chính thức nổ súng quay trở lại xâm lược Việt Nam Đáp án là: B. Hồ Chí Minh đọc bản Tuyên ngôn độc lập, tuyên bố sự ra đời của nước Việt Nam Dân chủ cộng hòa </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lực lượng xã hội nào dưới đây đã tiếp thu luồng tư tưởng mới từ bên ngoài vào Việt Nam đầu thế kỉ XX?
A. Nông dân
B. Công nhân
C. Sĩ phu yêu nước tiến bộ
D. Sĩ phu yêu nước Đáp án là: C. Sĩ phu yêu nước tiến bộ </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word whose bold part is pronounced differently from others. Write A, B, C or D in the blank.
A. book ed
B. travell ed
C. look ed
D. stopp ed Đáp án là: B. travell ed </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 10,6 gam Na 2 CO 3 vào dung dịch H 2 SO 4 (loãng, dư), sau khi phản ứng xảy ra hoàn toàn thu được V lít CO 2 (đktc). Giá trị của V là
A. 3,36
B. 2,80
C. 2,24
D. 1,12 Đáp án là: C. 2,24 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở gà, giới đực mang cặp nhiễm sắc thể giới tính XX, giới cái mang cặp nhiễm sắc thể giới tính XY. Cho phép lai: Pt/c gà lông dài, màu đen x gà lông ngắn, màu trắng, F 1 thu được toàn gà lông dài, màu đen. Cho gà trống F 1 giao phối với gà mái chưa biết kiểu gen thu được F 2 gồm: 20 con gà mái lông dài, màu đen: 20 con gà mái lông ngắn, màu trắng: 5 con gà mái lông dài, màu trắng: 5 con gà mái lông ngắn, màu đen. Tất cả gà trống của F 2 đều có lông dài, màu đen. Biết 1 gen quy định 1 tính trạng trội lặn hoàn toàn, không có đột biến xảy ra. Tần số hoán vị gen của gà F 1 là
A. 5%
B. 20%
C. 10%
D. 25% Đáp án là: B. 20% </s> | [
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438,
207,
158,
207,
140,
10364,
30712,
29892,
330,
601,
207,
158,
... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chất hữu cơ X có công thức phân tử C 4 H 10 O. Số lượng các đồng phân của X có phản ứng với Na là:
A. 4
B. 5
C. 6
D. 7 Đáp án là: A. 4 </s> | [
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29901,
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207,
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1302,
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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: Trong các khẳng định sau đây, khẳng định nào sai?
A. Nếu giá của ba vectơ cắt nhau từng đôi một thì 3 vectơ đồng phẳng
B. Nếu ba vectơ a→,b→,c→ có một vectơ 0→ thì ba vectơ đồng phẳng
C. Nếu giá của ba vectơ a→,b→,c→ cùng song song với một mật phẳng thì ba vectơ đó đồng phẳng
D. Nếu trong ba vectơ a→,b→,c→ có hai vec tơ cùng phương thì ba vectơ đó đồng phẳng Đáp án là: A. Nếu giá của ba vectơ cắt nhau từng đôi một thì 3 vectơ đồng phẳng </s> | [
1,
1,
29871,
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29976,
29886,
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29901,
1605,
549,
274,
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228,
189,
182,
865,
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30128... | [
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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: Đây là công trình kiến trúc thuộc tôn giáo nào?
A. Ấn Độ giáo
B. Đạo Giáo
C. Phật Giáo
D. Hồi giáo Đáp án là: A. Ấn Độ giáo </s> | [
1,
1,
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29976,
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425,
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865,
3367... | [
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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: Cho hình chóp S.ABC có đáy ABC là tam giác vuông tại B, AB = a, cạnh bên SA vuông góc với đáy và SA = a√(2). Gọi M là trung điểm của AB. Tính khoảng cách d giữa hai đường thẳng SM và BC
A. d = (a√(3))/2
B. d = (a√(2))/3
C. d = (a√(3))/3
D. d = (a)/2 Đáp án là: B. Tính khoảng cách d giữa hai đường thẳng SM và BCA. d = (a√(3))/2 </s> | [
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29901,
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317,
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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: Theo giờ GMT, lãnh thổ phần đất liền của nước ta chủ yếu nằm ở múi giờ thứ
A. 8.
B. 6.
C. 7.
D. 9. Đáp án là: C. 7. </s> | [
1,
1,
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450,
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330,
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402,
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425,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đốt cháy hoàn toàn 43,1 gam hỗn hợp X gồm axit đơn no hở (RCOOH), glyxin, alalin và axit glutamic thu được 1,4 mol CO 2 và 1,45 mol H 2 O. Mặt khác 43,1 gam X tác dụng vừa đủ với 0,3 mol HCl. Nếu cho 43,1 gam hỗn hợp X tác dụng với 0,7 mol NaOH trong dung dịch sau đó cô cạn thì thu được khối lượng chất rắn khan là :
A. 58,5 gam
B. 60,3 gam
C. 71,1 gam
D. 56,3 gam Đáp án là: B. 60,3 gam </s> | [
1,
1,
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29976,
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29901,
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31500,
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30103,
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5089,
... | [
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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: Căn cứ vào Atlat Địa lí Việt Nam trang 20, hai tỉnh có giá trị sản xuất lâm nghiệp cao nhất nước ta là
A. Nghệ An, Lạng Sơn.
B. Long An, Thanh Hóa.
C. Nghệ An, Bắc Giang.
D. Yên Bái, Lạng Sơn. Đáp án là: A. Nghệ An, Lạng Sơn. </s> | [
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1,
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29976,
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2723,
207,
158,
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2947,
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29877,
2... | [
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1,
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1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Nhà văn Nam Cao mất năm 36 tuổi, trong trường hợp nào?
A. Bị bệnh
B. Bị địch bắt giam và tra tấn dã man
C. Bị địch phục kích và hi sinh.
D. Cả A, B, C đều sai. Đáp án là: C. Bị địch phục kích và hi sinh. </s> | [
1,
1,
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29901,
405,
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1... |
<s> Chọn đáp án đúng với câu hỏi: The topic of this passage is
A. a language developed in the last few years
B. one man’s efforts to create a universal language
C. using language to communicate internationally
D. how language can be improve Đáp án là: B. one man’s efforts to create a universal language </s> | [
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1,
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29976,
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450,
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338,
13,
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263,
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1,
1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Ở phương diện thời gian, đất nước được cảm nhận ở:
A. Quá khứ
B. Hiện tại
C. Tương lai
D. Chiều dài thời gian lịch sử từ quá khứ đến hiện tại và tương lai Đáp án là: D. Chiều dài thời gian lịch sử từ quá khứ đến hiện tại và tương lai </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,
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146,
29875,
29901,
438,
207,
158,
207,
140,
1374,
29884,
207,
158,
29877,
207,
158,
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1,
1,
1,
1,
1,
1,
1... |
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