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<s> Chọn đáp án đúng với câu hỏi: Surprisingly, however, psychologists (99)________ that most victims are middle-aged housewives who have never used a computer before.
A. say
B. tell
C. object
D. promise Đáp án là: A. say </s> | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: Hai bến sông A và B cách nhau 18 km theo đường thẳng. Một chiếc canô phải mất thời gian bao nhiêu để đi từ A đến B rồi trở lại ngay từ B tới A. Biết rằng vận tốc của canô khi nước không chảy là 16,2 km/h và vận tốc của dòng nư... | [
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30... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho bảng số liệu thống kê sau
Loại nước uống
Nước cam
Nước dứa
Nước chanh
Nước dưa hấu
Số người chọn
12
8
11
8
Loại nước uống nào được chọn nhiều nhất?
A. Nước cam;
B. Nước dứa;
C. Nước chanh;
D. Nước dưa hấu. Đáp án là: A. Nước cam; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 4^x-2.6^x=3.9^x. Tìm I=(12^x)/(27^x)
A. I = 27
B. I = 6
C. I = 3
D. I = 9 Đáp án là: D. I = 9 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Vì lí do nào dưới đây mà các dụng cụ được dùng để sửa chữa điện như kìm, tuavit... đều có cán được bọc nhựa hay cao su?
A. Cao su, nhựa làm cho tay cầm không bị nóng.
B. Cao su, nhựa đều là chất cách điện nên tránh không cho dòng... | [
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<s> Chọn đáp án đúng với câu hỏi: Last week alone, we received about four accident reports per day, with most of the accidents occurring during dusk and (5) _______ hours.
A. top
B. high
C. head
D. peak Đáp án là: D. peak </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhúng một thanh sắt vào dung dịch Cu(NO 3 ) 2. Sau một thời gian lấy thanh sắt ra làm khô, thấy khối lượng thanh sắt tăng 3 gam. Khối lượng sắt đã phản ứng là:
A. 12 gam.
B. 8,4 gam.
C. 7,0 gam.
D. 14 gam. Đáp án là: A. 12 gam. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một hình trụ có bán kính đáy bằng a và có thiết diện qua trục là một hình chữ nhật có diện tích là 2a^2. Diện tích xung quanh của hình trụ là:
A. 4πa^2
B. 3πa^2
C. 2πa^2
D. πa^2 Đáp án là: C. 2πa^2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dụng cụ nào sau đây không phải là nguồn điện?
A. Pin
B. Bóng đèn điện đang sáng
C. Sạc dự phòng
D. Acquy Đáp án là: B. Bóng đèn điện đang sáng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mĩ chính thức gây chiến tranh phá hoại miền Bắc lần thử nhất vào thời gian nào?
A. Ngày 5 - 8 - 1964
B. Ngày 7 - 2 - 1965
C. Ngày 8 - 5 - 1965
D. Ngày 2 - 7 - 1965 Đáp án là: B. Ngày 7 - 2 - 1965 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word whose underlined part is pronounced differently from that of the others.
A. r e medy
B. el e ctronic
C. sp e cies
D. dw e ller Đáp án là: C. sp e cies </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ý nghĩa lớn nhất của việc đưa đồng ơ-rô vào sử dụng chung trong Liên minh châu Âu là
A. nâng cao sức cạnh tranh của thị trường chung châu Âu.
B. thủ tiêu những rủi ro khi chuyên đổi tiền tệ.
C. tạo thuận lợi cho việc chuyển giao vô... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the word whose underlined part is pronounced differently from that of the rest
A. l i mit
B. f i gure
C. i ron
D. b i llion Đáp án là: C. i ron </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật rơi tự do khi chạm đất thì vật đạt vận tốc v = 25 m/s. Hỏi vật được thả rơi từ độ cao nào? Lấy g = 10 m / s 2.
A. 21,25 m.
B. 31,25 m.
C. 11,25 m.
D. 27,25 m. Đáp án là: B. 31,25 m. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc điểm chung của sinh vật Việt Nam là
A. Sinh vật Việt Nam phong phú và đa dạng.
B. Sự đa dạng về thành phần loài, về gen di truyền, về kiểu hệ sinh thái, và về công dụng của các sản phẩm sinh học.
C. Trên đất liền đới rừng nhi... | [
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29875,
29901,
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30250,
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31214,
207,
137,
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347,
31500... | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position ofprimary stress in each of the following questions.
A. district
B. harrow
C. tobacco
D. peasant Đáp án là: C. tobacco </s> | [
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350,
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315,
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470,
360,
373,... | [
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<s> Chọn đáp án đúng với câu hỏi: Một bình cầu thể tích 45 c m 3 chứa khí lí tưởng được nối với một ống khí hình trụ tiết diện 0,1 c m 2 một đầu được chặn bởi giọt thủy ngân. Ở nhiệt độ 20 ° C chiều dài cột khí trong ống là 10cm, xác định chiều dài của... | [
1,
1,
29871,
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29876,
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1715,
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865,
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274,
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4546,
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5777,
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30... | [
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1,
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<s> Chọn đáp án đúng với câu hỏi: With its thousands of rocks and caves _____ out of the water, Ha Long Bay has won international recognition.
A. emerge
B. to emerge
C. emerging
D. emerged Đáp án là: C. emerging </s> | [
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322,
274,
5989,
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714,
310,
... | [
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<s> Chọn đáp án đúng với câu hỏi: This picture reminds US of the time __________ we were young.
A. which
B. where
C. when
D. what Đáp án là: C. when </s> | [
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910,
7623,
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3148,
310,
278,
931,
903,
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591... | [
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1,
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<s> Chọn đáp án đúng với câu hỏi: Từ khi Nguyễn Kim chết, ai là người đã tiếp tục sự nghiệp “phù Lê diệt Mạc”?
A. Nguyễn Hoàng
B. Nguyễn Phúc Khoát
C. Trịnh Kiểm
D. Nguyễn Phúc Ánh Đáp án là: C. Trịnh Kiểm </s> | [
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2... | [
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<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu giá trị nguyên của tham số m để phương trình \(\sqrt[3]{{m + 3\sqrt[3]{{m + 3\sin x}}}} = \sin x\) có nghiệm thực?
A. 5;
B. 7;
C. 3;
D. 2. Đáp án là: A. 5; </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ thí nghiệm Ơ - xtét, hãy kiểm tra các phát biểu sau đây, phát biểu nào dưới đây là đúng?
A. Dòng điện gây ra từ trường.
B. Các hạt mang điện có thể tạo ra từ trường.
C. Các vật nhiễm điện có thể tạo ra từ trường.
D.... | [
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266,
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87... | [
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<s> Chọn đáp án đúng với câu hỏi: Read the following passage and choose A, B, C or D to indicate the correct answer to each of the questions. If we believe that clothing has to do with covering the body, and costume with the choice of a particular form of garment for a particular use, then we can say that clothing depe... | [
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865,
325,
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274,
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298,
228,
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29875,
29901,
7523,
278,
1494,
13382,
322,
6755,
319,
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350,
29892,
315,
470... | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận định nào sau đây không phải là cơ sở hình thành ASEAN?
A. Có chung mục tiêu, lợi ích phát triển kinh tế.
B. Sử dụng chung một loại tiền.
C. Do sức ép cạnh tranh giữa các khu vực trên thế giới.
D. Có sự tương đồng về địa lí, ... | [
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<s> Chọn đáp án đúng với câu hỏi: Các đơn thức −10;1/3x;2x^2y;5x^2.x^2 có bậc lần lượt là
A. 0; 1; 3; 4
B. 0; 3; 1; 4
C. 0; 1; 2; 3
D. 0; 1; 3; 2 Đáp án là: A. 0; 1; 3; 4 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: We can't get access_______ the Internet where we live.
A. to
B. on
C. at
D. with Đáp án là: A. to </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Many of gorillas are _______ danger _______ dying out. They are working to save mountain gorillas _______ extinction.
A. for / away / with
B. in / of / from
C. on / through / off
D. at / for / through Đáp án là: B. in / of / from </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các trường hợp sau, trường hợp nào cần tăng ma sát?
A. Bảng trơn và nhẵn quá.
B. Khi quẹt diêm.
C. Khi cần phanh gấp để xe dừng lại.
D. Tất cả các trường hợp trên đều cần tăng ma sát. Đáp án là: D. Tất cả các trường hợp tr... | [
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15... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một ống dây hình trụ, tiết diện đều, không có lõi thép. Số vòng dây trên mỗi mét chiều dài ống là 5000 vòng. Mắc ống dây vào một nguồn có suất điện động bằng E = 12V, điện trở trong không đáng kể. Biết điện trở của ống... | [
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1,
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1,
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: I bought a ticket, not expecting to win as I had never won anything in a raffle (51)________.
A. again
B. before
C. since
D. already Đáp án là: B. before </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Clean water supply was first taken into consideration by ______.
A. the English people
B. the ancient Romans
C. the Egyptians
D. the US people Đáp án là: B. the ancient Romans </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 84 gam hỗn hợp X gồm Na, K, Ba và Al 2 O 3 (trong đó oxi chiếm 20% về khối lượng) tan hết vào nước, thu được dung dịch Y và 13,44 lít H 2 (đktc). Cho 3,2 lít dung dịch HCl 0,75M và dung dịch Y, thu được m gam kết tủa. Giá trị của m là
A. 1... | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy sắp xếp theo chiều tăng dần độ ngọt của các cacbohiđrat là
A. glucozơ < saccarozơ < mantozơ < fructozơ.
B. glucozơ < mantozơ < saccarozơ < fructozơ.
C. mantozơ < glucozơ < saccarozơ < fructozơ.
D. saccarozơ < glucozơ < mantozơ < fructozơ. Đáp án là: ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho ∆ABC. Khẳng định nào sau đây đúng?
A. \(\cot A = \frac{{{b^2} + {c^2} - {a^2}}}{{4S}}\);
B. \(\cot A = \frac{{{b^2} + {c^2} + {a^2}}}{{4S}}\);
C. \(\cot A = \frac{{{b^2} + {c^2} - {a^2}}}{S}\);
D. \(\cot A = \frac{{{b^2} + {c^2} - {a^2}}}{{2S}}\). Đáp án là: A. \(\cot A = \frac{{{b... | [
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<s> Chọn đáp án đúng với câu hỏi: Khi cho Ba(OH) 2 dư vào dung dịch chứa FeCl 2, CuSO 4, AlCl 3 thu được kết tủa. Nung kết tủa trong không khí đến khối lượng không đổi, thu được hỗn hợp chất rắn X. Chất rắn X gồm:
A. FeO. CuO, BaSO 4
B. Fe 2 O 3, CuO, Al 2 O 3
C. FeO, CuO, Al ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho các nhận xét sau, có bao nhiêu nhận xét đúng về các nhân tố tiến hóa? (1) Tác động chủ yếu của chọn lọc tự nhiên là sự phân hóa khả năng sinh sản của những kiểu gen khác nhau trong quần thể, làm cho tần số tương đối của cá... | [
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<s> Chọn đáp án đúng với câu hỏi: They have not made any effort to integrate with the local community.
A. put together
B. connect
C. cooperate
D. separate Đáp án là: D. separate </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Câu chuyện được kể theo ngôi thứ mấy?
A. Ngôi thứ nhất.
B. Ngôi thứ hai.
C. Ngôi thứ ba.
D. Ngôi kể đan xen. Đáp án là: A. Ngôi thứ nhất. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sự biến động dân số thế giới do yếu tố nào sau đây quyết định?
A. Sinh đẻ và tử vong
B. Xuất cư và nhập cư
C. Sinh đẻ và nhập cư
D. Tử vong và xuất cư Đáp án là: A. Sinh đẻ và tử vong </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tình cảm của tác giả thể hiện trong bài thơ là gì?
A. Yêu chuyện cổ
B. Biết ơn ông cha đời trước
C. Tự hào về quê hương, đất nước
D. Cả 3 phương án trên Đáp án là: D. Cả 3 phương án trên </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Để đánh số trang của một quyển sách dày 2746 trang, ta cần dùng bao nhiêu chữ số?
A. 9875
B. 9876
C. 9877
D. 9878 Đáp án là: C. 9877 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lợi dụng cơ hội nào Pháp đưa quân tấn công Thuận An, cửa ngõ kinh thành Huế?
A. Sự suy yếu của triều đình Huế.
B. Sau thất bại tại trận Cầu Giấy lần hai, Pháp cũng cố lực lượng.
C. Pháp được tăng viện binh.
D. Vua Tự Đức qu... | [
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<s> Chọn đáp án đúng với câu hỏi: Yếu tố quyết định nhất trong vấn đề khai thác lãnh thổ theo chiều sâu đối với ngành công nghiệp của Đông Nam Bộ là
A. khí hậu ổn định, ít thiên tai.
B. nguồn lao động dồi dào, giá thành lao động rẻ.
C. nguồn tài nguyên khoáng sa... | [
1,
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29901,
10134,
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304,
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30103,
439,
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3010... | [
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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: Choose the best answer to complete the sentence. (Em hãy chọn câu trả lời đúng) You are _____ girl in our class.
A. the funniest
B. the funny
C. the funnier
D. funniest Đáp án là: A. the funniest </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: và năng lượng đáng kể cho cơ thể hoạt động. Ngoài ra, một lượng lớn chất béo được dùng trong công nghiệp để sản xuất
A. glucozo và ancol etylic
B. xà phòng và ancol etylic
C. glucozo và glixerol
D. xà phòng và glixerol Đáp án là: D. xà phò... | [
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1,
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2947,
30712,
1055,
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137,
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158,
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207,
158,
... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Bầu khí quyển nguyên thủy của Trái đất chứa hỗn hợp các hợp chất
A. CH4, hơi nước.
B. hydrô.
C. CH4, NH3, CO, hơi nước.
D. ôxy. Đáp án là: C. CH4, NH3, CO, hơi nước. </s> | [
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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: Trong chiến lược "Cam kết và mở rộng" (được triển khai trong thập kỉ 90 của thế kỉ XX), Mĩ coi trọng việc tăng cường
A. ứng dụng khoa học-công nghệ để phát triển năng lực sản xuất.
B. khôi phục, phát triển tính năng động và su... | [
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20... | [
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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 dãy chuyển hóa: X(C 3 H 4 ) → AgNO 3 ↓Y → HCl ↓Z Các chất Y, Z lần lượt là
A. CH 3 -C ≡ CAg; AgCl
B. AgCH 2 -C ≡ CAg; AgCl
C. CH 3 -C ≡ CAg; Ag
D. AgCl; AgCH 2 -C ≡ CAg Đáp án là: A. CH 3 -C ≡ CAg; AgCl </s> | [
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1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Tổng học sinh khối 6 của một trường Trung học cơ sở là một số có 3 chữ số và có chữ số hằng trăm là 3. Nếu xếp thành 5 hàng ngag hay 9 hàng ngang thì đều vừa đủ học sinh. Tìm số học sinh khối 6 của trường đó biết số học sinh đó lớn hơn 320?
A. 360;
B. 315;
C. 345;
D. 304. Đáp án là: A.... | [
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413,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một gen có thể tác động đến sự hình thành nhiều tính trạng khác nhau được gọi là
A. gen điều hòa
B. gen đa hiệu
C. gen tăng cường.
D. gen trội Đáp án là: B. gen đa hiệu </s> | [
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1,
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Để đảm bảo việc khai thác hợp lí, có hiệu quả đối với các nguồn tài nguyên biển và hải đảo thì các nguồn tài nguyên biển và hải đảo nước ta phải
A. khai thác tổng hợp.
B. khai thác có kế hoạch.
C. chọn ngành mũi nhọn.
D. khai tha... | [
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... | [
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1,
1,
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1,
1,
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: V. Read the passage below and choose one correct answer for each question. Movements and gestures by the hands, arms, legs, and other parts of the body and face are the most pervasive types of nonverbal messages and the most difficult to control. It is estimated that there are over 200... | [
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274,
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298,
228,
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29875,
29901,
478,
29889,
7523,
278,
13382,
2400,
322,
6755,
697,
1959,
1234,
363... | [
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1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Đâu không phải là thành công mà phong trào dân chủ 1936 – 1939 đạt được
A. Khối liên minh công – nông được hình thành
B. Đảng đã có một cuộc tập dượt chuẩn bị cho tổng khởi nghĩa.
C. Buộc chính quyền thực dân phải nhượng bộ mộ... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Phép tính nào sau đây không đúng?
A. 500 × 2 = 1000
B. 30 × 8 = 240
C. 700 × 6 = 420
D. 40 + 40 + 40 = 120 Đáp án là: C. 700 × 6 = 420 </s> | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Tiến hành phản ứng khử oxit X thành kim loại bằng khí H 2 dư theo sơ đồ hình vẽ: Oxit X không thể là:
A. CuO.
B. Al 2 O 3.
C. PbO
D. FeO. Đáp án là: B. Al 2 O 3. </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hai tấm kim loại phẳng A và B đặt song song đối diện nhau và được nối kín bằng một ampe kế. Chiếu chùm bức xạ vào tấm kim loại A, làm bứt các quang electron và chỉ có 25% bay về tấm B. Nếu số chỉ của ampe kế là 1,4 μA thì electron... | [
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<s> Chọn đáp án đúng với câu hỏi: Tính chất nào sau đây không phải là của phân tử?
A. Giữa các phân tử có khoảng cách
B. Chuyển động không ngừng
C. Có lúc đứng yên, có lúc chuyển động.
D. Chuyển động càng nhanh thì nhiệt độ vật càng cao Đáp án là: C. Có lúc đứng y... | [
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<s> Chọn đáp án đúng với câu hỏi: Một nam châm điện có dòng điện xoay chiều tần số 50Hz đi qua. Đặt nam châm điện phía trên một dây thép AB căng ngang với hai đầu cố đ ị nh, chiều dài sợi dây 60cm. Ta thấy trên dây có sóng dừng với 2 bó sóng. Tính vận tốc sóng t... | [
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<s> Chọn đáp án đúng với câu hỏi: Lời thơ đẹp và hào hùng, ý thơ có màu sắc của chủ nghĩa lãng mạn. Đó là đặc điểm nghệ thuật của nhà thơ nào?
A. Đỗ Phủ
B. Lý Bạch
C. Bạch Cư Dị
D. Cả ba nhà thơ trên Đáp án là: B. Lý Bạch </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dòng nào dưới đây nêu không sát nội dung cảm xúc của bài thơ “Trang Giang” được gửi gắm qua lời đề từ: “Bâng khuâng trời rộng nhớ sông dài”?
A. Nỗi buồn cô đơn trước vũ trụ, cuộc đời.
B. Nỗi cô đơn buồn nhớ mênh mang trươ... | [
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<s> Chọn đáp án đúng với câu hỏi: Một khung dây phẳng mang dòng điện nằm trong từ trường đều, mặt phẳng khung dây vuông góc với đường sức từ. Tăng dòng điện trong khung lên gấp hai lần thì độ lớn của momen ngẫu lực từ tác dụng lên khung dây sẽ thế nào?
A. ta... | [
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<s> Chọn đáp án đúng với câu hỏi: The writer wrote she disliked all of the following EXCEPT ____.
A. reading music
B. practising
C. the songs she had to learn
D. her teacher Đáp án là: D. her teacher </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tổng số hạt mang điện dương trong phân tử CO 2 (cho 6 C và 8 O)
A. 14
B. 28
C. 22
D. 44 Đáp án là: C. 22 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Để chấm dứt tình trạng “vòng luẩn quẩn”: nghèo đói, bệnh tật, tệ nạn xã hội, mất cân bằng sinh thái ở châu Phi biện pháp hiệu quả nhất là
A. chấm dứt tham nhũng, lãng phí.
B. hạn chế gia tăng dân số.
C. hạn chế nợ nước ng... | [
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<s> Chọn đáp án đúng với câu hỏi: Từ nửa sau những năm 70 của thế kỉ XX, một trong những thay đổi lớn trong chính sách đối ngoại của Nhật Bản là
A. tăng cường quan hệ với các nước Đông Nam Á.
B. coi trọng quan hệ với Đông Âu.
C. chỉ liên minh chặt chẽ với Mĩ.
D.... | [
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<s> Chọn đáp án đúng với câu hỏi: Chỉ ra cách hiểu đầy đủ nhất về nghĩa của từ?
A. Nghĩa của từ là nghĩa sự vật mà từ biểu thị
B. Nghĩa của từ là sự vật, tính chất mà từ biểu thị
C. Nghĩa của từ là sự vật, tính chất, hoạt động mà từ biểu thị
D. Nghĩ... | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the words with the different stress pattern from the others:
A. extensive
B. decorate
C. distinguish
D. acquaintance Đáp án là: B. decorate </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Lan has been a nurse all her life. She has spent her life caring for ______ sick.
A. the
B. a
C. an
D. f Đáp án là: A. the </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Weather and geographical conditions may determine the type of transportation using in a region.
A. Weather
B. Geographical
C. the type of
D. using in Đáp án là: D. using in </s> | [
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1,
1,
1,
1,
1,
1,
1,
1,
1,
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: Bắn hạt proton có động năng 5,5 MeV vào hạt nhân L 3 7 i đang đứng yên, gây ra phản ứng hạt nhân p + L 3 7 i → 2 α. Giả sử phản ứng không kèm theo bức xạ gama, hai hạt α có cùng động năng và bay theo hai hướng với nhau một góc 160 0. Coi kho... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: 2 500 g =... kg... g
A. 2 kg 5 g
B. 2 kg 500 g
C. 2000 kg 5 g
D. 2000 kg 500 g Đáp án là: B. 2 kg 500 g </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn câu đúng?
A. Tam giác đều có 6 trục đối xứng
B. Hình chữ nhật với hai kích thước khác nhau có 4 trục đối xứng
C. Hình thang cân, góc ở đáy khác 90^0, có một đúng một trục đối xứng
D. Hình bình hành có hai trục đối xứng Đáp án là: C. Hình thang cân, góc ở đáy khác 90^0, có một đúng... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Một chất điểm dao động điều hòa có phương trình x = A cos 10 π t − π 12 c m. Kể từ thời điểm t = 0, thời điểm để động năng bằng thế năng lần thứ 2018 là
A. 154 3 s
B. 1211 12 s
C. 6053 60 s
D. 3029 30 s Đáp án là: C. 6053 60 s </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đặc tính cần cù, có tinh thần trách nhiệm rất cao, coi trọng giáo dục, ý thức đổi mới của người lao động
A. là nhân tố quan trọng hàng đầu thúc đẩy nền kinh tế Nhật Bản phát triển.
B. đã tạo nên sự cách biệt của người Nhậ... | [
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<s> Chọn đáp án đúng với câu hỏi: Phản ứng nào sau đây điều chế được C H 4 tinh khiết hơn? Al 4 C 3 + 12 H 2 O → 4 Al OH 3 + 3 CH 4 ↑ 1 C 4 H 10 → crackinh C 3 H 6 ↑ + CH 4 ↑ 2 CH 3 COONa r + NaOH r → CaO, t ° Na 2 CO 3 + CH 4 ↑ 3 CH 2 COONa 2 r + 2 NaOH r → CaO, t ° 2 Na 2 CO 3 + CH 4 ↑ 4 C + 2 H 2 → t ... | [
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<s> Chọn đáp án đúng với câu hỏi: Cho điện tích dịch chuyển giữa 2 điểm cố định trong một điện trường đều với cường độ điện trường 100 V/m thì công của lực điện trường là 50 mJ. Nếu cường độ điện trường là 200 V/m thì công của lực điện trường dịch chu... | [
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đặc điểm tự nhiên của Đông Nam Á biển đảo là có
A. nhiều dãy núi hướng tây bắc - đông nam
B. các đồng bằng phù sa do sông lớn bồi đắp nên
C. nhiều quần đảo và hàng vạn đảo lớn, nhỏ
D. nhiều thung lũng giữa các dãy núi trải ro... | [
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<s> Chọn đáp án đúng với câu hỏi: Chọn đáp án đúngHãy chọn một đáp án chính xác nhất?
A. Nếu viết thêm chữ số 0 vào bên phải phần thập phân của một số thập phân thì được một số thập phân bằng nó
B. Nếu một số thập phân có chữ số 0 ở tận cùng bên phải phần thập phân thì khi bỏ chữ số 0 đó đi, ta được một số thập phân bằ... | [
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<s> Chọn đáp án đúng với câu hỏi: Tìm m ể tiệm cận ngang của đồ thị của hàm số y=((m−1)x+2)/(3x+4) cắt đường thẳng 2x−3y+5=0 tại điểm có hoành độ bằng 2.
A. m =2
B. m =1
C. m =10
D. m =7 Đáp án là: C. m =10 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi đi từ bờ này sang bờ kia, theo phương vuông góc với bờ, hướng của vận tốc thuyền đối với bờ hợp với bờ 1 góc xấp xỉ?
A. 72 °
B. 18 °
C. 17 °
D. 43 ° Đáp án là: A. 72 ° </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hợp chất nào sau đây vừa chứa nhóm chức este vừa chứa vòng benzen trong phân tử?
A. Phenyl axetat
B. phenyl amoniclorua
C. Anilin
D. Axit benzoic Đáp án là: A. Phenyl axetat </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D the word that has the underlined part different from others.
A. n a me
B. h a te
C. c a t
D. classm a te Đáp án là: C. c a t </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho hỗn hợp X gồm Al và Al 2 O 3 có tỉ lệ khối lượng tương ứng là 0,18 : 1,02. Cho X tan trong dung dịch NaOH vừa đủ thu được dung dịch Y và 0,672 lít khí H 2 (đktc). Cho Y tác dụng với 200 ml dung dịch HCl được kết tủa Z. Nung Z ở nhiệt đ... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
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30030,
865,
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31280,
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274,
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29884,
298,
228,
190,
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29875,
29901,
14542,
5089,
31500,
30478,
29876,
5089,
207,
158,
31214,
29886,
1060,... | [
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1,
1,
1,
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<s> Chọn đáp án đúng với câu hỏi: _____ he only started learning English last year, Henry can now speak it like a native.
A. Although
B. Despite
C. Because of
D. Because Đáp án là: A. Although </s> | [
1,
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865,
325,
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274,
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29901,
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7652,
540,
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4687,
6509,
4223,
1833,
1629,
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6498,
508... | [
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<s> Chọn đáp án đúng với câu hỏi: Find the word which has a different sound in the part underlined.
A. a utumn
B. c a ffee
C. m a ll
D. c a ll Đáp án là: B. c a ffee </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions. Make sure you _____ up the data on your computer, because you might get a virus.
A. back
B. store
C. save
D. copy Đáp án là: A. back </s> | [
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350,
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315,
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470,
360,
304,... | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một vật sáng phẳng đặt trước một thấu kính, vuông góc với trục chính. Ảnh của vật tạo bởi thấu kính bằng ba lần vật. Dời vật lại gần thấu kính một đoạn. Ảnh của vật ở vị trí mới vẫn bằng ba lần vật. Có thể kết l... | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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865,
325,
31280,
29875,
274,
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298,
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29875,
29901,
4546,
31214,
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2947,
31214,
31500,
29873,
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30103,
865... | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trong tập hợp số tự nhiên, phép trừ a – b chỉ thực hiện được khi
A. a > b.
B. a ≥ b.
C. a < b.
D. a ≤ b. Đáp án là: B. a ≥ b. </s> | [
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1,
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3... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nhà An có nuôi 200 con gà trong đó có 40 con gà trống. Số gà trống chiếm số phần trăm so với số gà mái là:
A. 20%
B. 25%
C. 40%
D. 80% Đáp án là: B. 25% </s> | [
1,
1,
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29976,
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29871,
1715,
29871,
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865,
325,
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274,
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405,
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1,
1,
1,
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<s> Chọn đáp án đúng với câu hỏi: ______ in a recent science competition, the three students were awarded scholarships totaling $21,000.
A. Judged the best
B. To be judged the best
C. Judging the best
D. Having judged the best Đáp án là: B. To be judged the best </s> | [
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903,
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29918,
297,
263,
7786,
10466,
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278,
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8... | [
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1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một bình kín chứa 0,04 mol C 2 H 2, và 0,06 mol H 2, một ít bột Ni. Nung nóng bình sau một thời gian thu được hỗn hợp khí Y. Dẫn toàn bộ khí Y vào dung dịch brom dư thì có 0,896 lít hỗn hợp khí Z bay ra. Tỉ khối của Z so với H 2 bằng 4... | [
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29... | [
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Phân kali KCl sản xuất được từ quặng sinvinit thường chỉ chứa 50% K 2 O. Hàm lượng % KCl trong phân bón đó:
A. 72,9
B. 76
C. 79,2
D. 75,5 Đáp án là: C. 79,2 </s> | [
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân chính xuất hiện mưa sao băng là?
A. Sao chổi
B. Sự vỡ vụn của thiên hà
C. Phép thuật của tiên nữ
D. Sự thay đổi của tính chất sao Đáp án là: A. Sao chổi </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho hàm số y = (ax + b)^5 với a, b là tham số. Khi đó :
A. y^(10)(1) = 0.
B. y^(10)(1) = 10a + b.
C. y^(10)(1) = 5a.
D. y^(10)(1) = 10a. Đáp án là: A. y^(10)(1) = 0. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Trong mạch dao động LC có điện trở thuần bằng 0 thì
A. năng lượng từ trường tập trung ở cuộn cảm và biến thiên với chu kỳ bằng chu kỳ dao động riêng của mạch.
B. năng lượng từ trường tập trung ở tụ điện và biến thiên với... | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đại lượng nào sau đây không phải là thông số trạng thái của một lượng khí?
A. Thể tích.
B. Khối lượng.
C. Áp suất.
D. Nhiệt độ. Đáp án là: B. Khối lượng. </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Giả sử một quần thể động vật có 2000 cá thể. Trong đó 125 cá thể có kiểu gen AA; 750 cá thể có kiểu gen Aa; 1125 cá thể có kiểu gen aa, tần số của alen A trong quần thể trên là
A. 0,0625.
B. 0,25. C. 0,4375.
C. 0,4375.
D. 0,55. ọn là: B ... | [
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30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
22566,
207,
140,
480,
207,
158,
207,
140,
2730,
31214,
31500,
29873... | [
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... |
<s> Chọn đáp án đúng với câu hỏi: Trong chân không, cho hai đường thẳng x, y song song và cách nhau 9cm. Đặt dòng điện thẳng cường độ I 1 = 15A trùng với đường thẳng x. Muốn cảm ứng từ tại những điểm nằm trên đường thẳng y bằng 0 thì phải đặt thêm dòng điện tha... | [
1,
1,
29871,
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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,
1605,
549,
10329,
31500,
29876,
413,
1251,
31500,
865,
29892,
3060,
... | [
1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Ở giữa của Nam Á là miền địa hình nào sau đây?
A. Dãy Gác Đông, Gác Tây.
B. Sơn nguyên Đê-can.
C. Hệ thống dãy Hi-ma-lay-a.
D. Đồng bằng Ấn - Hằng. Đáp án là: D. Đồng bằng Ấn - Hằng </s> | [
1,
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29871,
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30030,
865,
325,
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29875,
29901,
438,
207,
158,
207,
140,
4005,
29884,
207,
158,
30478,
29874,
2723,... | [
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hình nào không phải là hình đa diện đều trong các hình dưới đây?
A. Hình chóp tam giác đều.
B. Hình hộp chữ nhật có diện tích các mặt bằng nhau.
C. Hình lập phương.
D. Hình tứ diện đều Đáp án là: A. Hình chóp tam giác đều. </s> | [
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30128,
29976,
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29901,
379,
30097,
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302,
30001,
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413,
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865,
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1,
1,
1,
1,
1,
1,
1... |
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