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<s> Chọn đáp án đúng với câu hỏi: He still doesn’t know his budget when living alone in the city.
A. when to manage
B. how to manage
C. where to manage
D. what to manage Đáp án là: B. how to manage </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy kim loại bị thụ động trong axit HNO 3 đặc, nguội là
A. Fe, Al, Cu
B. Fe, Zn, Cr
C. Fe, Al, Cr
D. Fe, Al, Ag Đáp án là: C. Fe, Al, Cr </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Rút gọn biểu thức C = 2( sin^4x + cos^4x + sin^2x.cos^2x) ^2 - ( sin^8x + cos^8x) có giá trị không đổi và bằng
A. 2
B. 4
C. 1
D. 0 Đáp án là: C. 1 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions
A. communicate
B. impossible
C. intervention
D. activity Đáp án là: C. intervention </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quá trình hình thành liên kết ion trong phân tử MgO là
A. Mg ⟶ Mg 2+ + 2e; O + 2e ⟶ O 2− ; Mg 2+ + O 2− ⟶ MgO
B. Mg ⟶ Mg + + 1e; O + 1e ⟶ O − ; Mg + + O − ⟶ MgO
C. O ⟶ O 2+ + 2e; Mg + 2e ⟶ Mg 2− ; O 2+ + Mg 2− ⟶ MgO
D. O ⟶ O + + 1e; Mg + 1e ⟶ Mg − ; O + + Mg − ⟶ MgO Đáp án là: A. Mg ⟶ Mg 2+ + 2e; O + 2e ⟶ O 2− ; Mg 2+ + O 2− ⟶ MgO </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Anken thích hợp để điều chế ancol sau đây (CH 3 CH 2 ) 3 C-OH là
A. 3-etylpent-2-en
B. 3-etylpent-3-en
C. 3-etylpent-1-en
D. 3,3- đimetylpent-1-en Đáp án là: A. 3-etylpent-2-en </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phép lai nào sau đây tạo ra F1 có số loại kiểu gen nhiều nhất:
A. AA x AA
B. aa x aa
C. Aa x AA
D. Aa x Aa Đáp án là: D. Aa x Aa </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The price of a piano is too expensive for me.
A. I can buy a piano because it is not expensive.
B. I can play piano well because I practice every day.
C. A piano is not as expensive as I thought.
D. A piano costs too much for me. Đáp án là: D. A piano costs too much for me </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi núm xoay của đồng hồ đo điện đa năng hiện số DT‒830B đặt ở vị trí DCV 20 V thì nó được dùng làm chức năng
A. vôn kế đo dòng một chiều và giới hạn của thang đo là 20 V
B. vôn kế đo dòng xoay chiều và giới hạn của thang đo là 20 V
C. ampe kế đo dòng một chiều và giới hạn của thang đo là 20 A
D. ampe kế đo dòng xoay chiều và giới hạn của thang đo là 20 A Đáp án là: A. vôn kế đo dòng một chiều và giới hạn của thang đo là 20 V </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Tổng các góc của tất cả các mặt của khối đa diện đều loại {4;3} là
A. 4π
B. 8π
C. 12π
D. 10π Đáp án là: C. 12π </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nancy and James are talking about their school days. Nancy:"I think school days are the best time of our lives." James:“.We had sweet memories together then."
A. A.bsolutely
B. That's nonsense
C. I'm afraid so
D. I doubt it Đáp án là: A. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có những loài sinh vật bị con người săn bắt hoặc khai thác quá mức, làm giảm mạnh số lượng cá thể thì sẽ có nguy cơ bị tuyệt chủng. Cho các cách giải thích sau đây: (1) Khi số lượng cá thể của quần thể còn lại quá ít thì dễ xảy ra giao phối không ngẫu nhiên sẽ dẫn đến làm tăng tần số alen có hại. (2) Khi số lượng cá thể của quần thể còn lại quá ít thì đột biến trong quần thể dễ xảy ra, làm tăng tần số alen đột biến có hại. (3) Khi số lượng cá thể của quần thể còn lại quá ít thì dễ xảy ra biến động di truyền, làm nghèo vốn gen cũng như làm biến mất nhiều alen có lợi của quần thể. (4) Khi số lượng cá thể của quần thể giảm mạnh thì sẽ làm giảm di - nhập gen, làm giảm sự đa dạng di truyền của quần thể. Có bao nhiêu cách giải thích chưa hợp lí.
A. 3
B. 2
C. 1
D.4 Đáp án là: A. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong phản ứng: K 2 C r 2 O 7 + HCl → C r C l 3 + C l 2 + KCl + H 2 O, số phân tử HCl đóng vai trò chất khử bằng k lần tổng số phân tử HCl tham gia phản ứng. Giá trị của k là
A. 3 7
B. 1 7
C. 3 14
D. 4 7 Đáp án là: A. 3 7 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D to indicate the word that differs from the other three in the position of stress in each of the following questions. (Chọn đáp án A, B, C hoặc D để tìm từ có trọng âm khác với ba từ còn lại)
A. cred i t
B. trans i t
C. pr i celess
D. i mport Đáp án là: C. pr i celess </s> | [
1,
1,
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29871,
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29976,
29886,
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325,
31280,
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274,
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29901,
14542,
852,
278,
5497,
319,
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350,
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315,
470,
360,
304,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Cho hàm số y = 2x^2 + (4m - 2) x + m - 1. Tìm m để đồ thị hàm số có hoành độ đỉnh là 4
A. m = -3/2
B. m = 1/2
C. m = 9/2
D. m = (-7)/2 Đáp án là: D. m = (-7)/2 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. Telecommuting is some form of computer communication between employees’ homes and offices. For employees whose job involve sitting at a terminal or word processor entering data or typing reports, the location of the computer is of no consequence. If the machine can communicate over telephone lines, when the work is completed, employees can dial the office computer and transmit the material to their employers. A recent survey in USA Today estimates that there are approximately 8,7 million telecommuters. But although the numbers are rising annually, the trend does not appear to be as significant as predicted when Business Week published “The Portable Executive” as its cover story a few years ago. Why hasn’t telecommuting become more popular? Clearly, change simply takes time. But in addition, there has been active resistance on the part of many managers. These executives claim that supervising the telecommuters in a large work force scattered across the country would be too difficult, or, at least, systems for managing them are not yet developed, thereby complicating the manager’s responsibilities. It is also true that employees who are given the option of telecommuting are reluctant to accept the opportunity. Most people feel that they need regular interaction with a group, and many are concerned that they will not have the same consideration for advancement if they are not more visible in the office setting. Some people feel that even when a space in their homes is set aside as a work area, they never really get away from the office. With which of the following topics is the passage primarily concerned?
A. An overview of telecommuting.
B. The failure of telecommuting.
C. The advantages of telecommuting.
D. A definition of telecommuting. Đáp án là: A. An overview of telecommuting. </s> | [
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7523,
278,
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322,
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278,
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319,
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350,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Why did Danny decide to enter the marathon? Danny's totally unfit.
A. Why did Danny decide to enter the marathon who’s totally unfit?
B. Why did Danny, whose totally unfit, decide to enter the marathon?
C. Why did Danny decide to enter the marathon, who’s totally unfit?
D. Why did Danny, who’s totally unfit, decide to enter the marathon? Đáp án là: D. Why did Danny, who’s totally unfit, decide to enter the marathon? </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Hiđroxit nào sau đây có tính lưỡng tính?
A. Al(OH) 3.
B. Zn(OH) 2.
C. Be(OH) 2
D. Be(OH) 2, Zn(OH) 2, Al(OH) 3. Đáp án là: D. Be(OH) 2, Zn(OH) 2, Al(OH) 3 </s> | [
1,
1,
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30128,
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1... |
<s> Chọn đáp án đúng với câu hỏi: Mom had to do everything _______ electricity.
A. by
B. on
C. without
D. within Đáp án là: C. without </s> | [
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1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Chất E (C 2 H 6 N 2 O 5 ) là muối của amino axit với một axit vô cơ. Cho 2,76 gam E tác dụng hoàn toàn với 50 mL dung dịch NaOH 1M; cô cạn dung dịch sau phản ứng, thu được m gam chất rắn khan. Giá trị của m là
A. 3,64
B. 4,04
C. 4,44
D. 3,72 Đáp án là: B. 4,04 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một mạch điện xoay chiều RLC mắc nối tiếp theo đúng thứ tự gồm cuộn cảm thuần có cảm kháng Z L, biến trở R và tụ điện có dung kháng Z C. Nếu điện áp hiệu dụng trên đoạn RC không thay đổi khi chỉ R thay đổi thì
A. Z L = 2 Z C
B. Z c = 2 Z L
C. Z L = 3 Z C
D. Z L = Z C Đáp án là: A. Z L = 2 Z C </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Ở phân lớp 3d số electron tối đa là
A. 14.
B. 10.
C. 6.
D. 18. Đáp án là: B. 10. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân cùa sự mỏi cơ là
A. do thải ra nhiều khí cacbônic.
B. do thải ra ít khí cacbônic.
C. do không được cung cấp đủ ôxi.
D. cả A, B và C. Đáp án là: C. do không được cung cấp đủ ôxi. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Xơ nang là một bệnh do gen lặn nằm trên nhiễm sắc thể thường gây ra, bệnh này phát sinh do có trở ngại trong việc vận chuyển các ion giữa tế bào và ngoại bào. Bệnh này thường gây chết người và hầu hết người bị chết ở độ tuổi trẻ. Một đứa trẻ được chuẩn đoán mắc bệnh, nhưng cha mẹ của mình hoàn toàn khỏe mạnh. Tuyên bố nào là đúng?
A. Bố hoặc mẹ là đồng hợp tử về gen gây bệnh xơ nang.
B. Những đứa con sau này của cặp vợ chồng trên có thể bị bệnh với xác suất là 1/4
C. Các con là dị hợp tử gen gây bệnh xơ nang
D. Con trai dễ mắc bệnh xơ nang hơn (so với con gái) Đáp án là: B. Những đứa con sau này của cặp vợ chồng trên có thể bị bệnh với xác suất là 1/4 </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: She accepted the job _______ the salary, which was rather low.
A. although
B. because of
C. inspite
D. despite Đáp án là: D. despite </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Choose the letter A, B, C or D the word that has different stress pattern from others.
A. deliver
B. emigrate
C. assistant
D. extremely Đáp án là: B. emigrate </s> | [
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1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Công thức hóa học của tristearin là
A. (C 15 H 31 COO) 3 C 3 H 5.
B. (C 17 H 31 COO) 3 C 3 H 5.
C. (C 17 H 33 COO) 3 C 3 H 5.
D. (C 17 H 35 COO) 3 C 3 H 5 Đáp án là: A. (C 15 H 31 COO) 3 C 3 H 5. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hạt nhân X phóng xạ biến đổi thành hạt nhân bền Y. Ban đầu λ 1 có một mẫu chất X nguyên chất. Tại thời điểm t 1 v à t 2, tỉ số giữa số hạt nhân Y và số hạt nhân X ở trong mẫu tương ứng là 2 và 3. Tại thời điểm t 3 = 2 t 1 + 3 t 2, tỉ số đó là
A. 17
B. 575
C. 107
D. 72 Đáp án là: B. 575 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có bao nhiêu phương trình trong các phương trình dưới đây là phương trình bậc hai một ẩn: √(2)x^2+1=0; x^2+2019x=0; x+√(x)−1=0; 2x+2y^2+3=9; 1/(x^2)+x+1=0.
A. 2
B. 3
C. 4
D. 0 Đáp án là: A. 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: When something is “controversial”, __________.
A. everyone agrees with it.
B. everyone disagrees with it.
C. people have different ideas about it.
D. people protect it. Đáp án là: C. people have different ideas about it. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: A. malaria B. eradicate C. character D. spectacular
A. malaria
B. eradicate
C. character
D. spectacular Đáp án là: A. malaria </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cơ sở cho phát triển nền lâm, nông nghiệp nhiệt đới, đa dạng hóa cây trồng ở miền núi nước ta không phải là
A. nguồn nước dồi dào và cung cấp đủ quanh năm.
B. rừng giàu có về thành phần loài động, thực vật nhiệt đới.
C. đất feralit diện tích rộng, có nhiều loại khác nhau.
D. mưa nhiều, lắm sông suối, hẻm vực. Đáp án là: D. mưa nhiều, lắm sông suối, hẻm vực </s> | [
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<s> Chọn đáp án đúng với câu hỏi: When you are an old age pensioner, you have to learn to_________a very small income.
A. live on
B. live up to
C. live out
D. live down Đáp án là: A. live on </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhân cả tử số và mẫu số của phân số \[\frac{{14}}{{23}}\] với số nào để được phân số \[\frac{{168}}{{276}}\]?
A. 14
B. 23
C. 12
D. 22 Đáp án là: C. 12 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hoạt động nào sau đây không thuộc công nghiệp chế biến lương thực, thực phẩm của nước ta
A. Chế biến sản phẩm trồng trọt
B. Chế biến gỗ và lâm sản
C. Chế biến sản phẩm chăn nuôi
D. Chế biến thuỷ, hải sản Đáp án là: B. Chế biến gỗ và lâm sản </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Truyện Bức tranh của em gái tôi, tác giả sử dụng chủ yếu phương thức biểu đạt gì?
A. Miêu tả
B. Tự sự
C. Biểu cảm
D. Tự sự kết hợp với miêu tả và biểu cảm Đáp án là: D. Tự sự kết hợp với miêu tả và biểu cảm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ngâm bột sắt vào dung dịch gồm Cu(NO 3 ) 2 và AgNO 3. Kết thúc phản ứng thu được dung dịch X gồm hai muối và chất rắn Y gồm hai kim loại. Dung dịch X gồm
A. Fe(NO 3 ) 3, AgNO 3
B. Fe(NO 3 ) 2,Fe(NO 3 ) 3
C. Cu(NO 3 ) 2 và AgNO 3
D. Fe(NO 3 ) 2,Cu(NO 3 ) 2 Đáp án là: D. Fe(NO 3 ) 2,Cu(NO 3 ) 2 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bác Bình cần làm 2 cái thùng hình lập phương bằng sắt không có nắp cạnh 1,8m. Hỏi Bác sơn cả bên trong và bên ngoài 2 cái thùng đó thì phải mua bao nhiêu ki-lô-gam sơn, biết rằng cứ 20m^2 thì cần 5kg sơn.
A. 32,4kg
B. 16,2kg
C. 8,1kg
D. 4,05kg Đáp án là: B. 16,2kg </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Các chất khí chủ yếu gây hiệu ứng nhà kính là
A. H 2 O, CH 4, CFC.
B. N 2 O, O 2, H 2, CH 4.
C. CO2, N 2 O, O 2.
D. CO 2, CH 4, CFC. Đáp án là: D. CO 2, CH 4, CFC </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một dây dẫn có chiều dài xác định được cuốn trên trên ống dây dài l và tiết diện S thì có hệ số tự cảm 0,2 mH. Nếu cuốn lượng dây dẫn trên trên ống có cùng tiết diện nhưng chiều dài tăng lên gấp đôi thì hệ số tự cảm cảm của ống dây là
A. 0,1 H
B. 0,1 mH
C. 0,4 mH
D. 0,2 mH Đáp án là: B. 0,1 mH </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhận định nào sau đây không đúng với vị trí địa lí của Hoa Kì
A. Nằm ở bán cầu Đông
B. Nằm ở bán cầu Tây
C. Tiếp giáp Canađa
D. Tiếp giáp Đại Tây Dương Đáp án là: A. Nằm ở bán cầu Đông </s> | [
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<s> Chọn đáp án đúng với câu hỏi: When the children work for Mrs. Taylor, they........
A. drive a truck
B. grow flowers
C. sweep the sidewalk
D. paint the store Đáp án là: C. sweep the sidewalk </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. decided
B. enjoyed
C. offered
D. arranged Đáp án là: A. decided </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “ who ” in paragraph 4 refers to ______.
A. competition
B. legend of Ronkainen the Robber
C. potential members
D. a hardnosed gang leader Đáp án là: D. a hardnosed gang leader </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Đây là nhận định chính xác về con đường của Chế Lan Viên trong giai đoạn 1945 – 1958?
A. Con đường thơ “trải qua nhiều biến động, nhiều bước ngoặt với những trăn trở, tìm tòi không ngừng của nhà thơ”
B. Con đường thơ vui tươi phấn chấn vì bắt gặp lí tưởng Cách mạng
C. Con đường thơ gặp nhiều trắc trở vì chiến tranh
D. Đáp án khác Đáp án là: A. Con đường thơ “trải qua nhiều biến động, nhiều bước ngoặt với những trăn trở, tìm tòi không ngừng của nhà thơ” </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong quang phổ vạch của nguyên tử hidro, các vạch trong dãy Pasen được tạo thành khi các electron chuyển từ quỹ đạo bên ngoài vế quỹ đạo nào sau đây?
A. L.
B. N.
C. M.
D. K. Đáp án là: C. M. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Biết công thức phân tử của alanin là C 3 H 7 NO 2 và valin là C 5 H 11 NO 2. Hexapeptit mạch hở tạo từ 3 phân tử alanin (Ala) và 3 phân tử valin (Val) có bao nhiêu nguyên tử hiđro?
A. 45
B. 44
C. 42
D. 43 Đáp án là: B. 44 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một kính thiên văn gồm vật kính có tiêu cự f 1 = 120 c m và thị kính có tiêu cự f 2 = 5 c m. Khoảng cách giữa hai kính khi người mắt tốt quan sát Mặt Trăng trong trạng thái không điều tiết là:
A. 125 c m
B. 124 c m
C. 120 c m
D. 115 c m Đáp án là: A. 125 c m </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cư dân Ai Cập cổ đại có tín ngưỡng nào sau đây?
A. Sùng bái đạo Nho.
B. Sùng bái tự nhiên.
C. Sùng bái đạo Phật.
D. Sùng bái Ki-tô giáo. Đáp án là: B. Sùng bái tự nhiên. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hỗn hợp A gồm Al, Zn, Cu, Mg tác dụng hết với dung dịch HNO 3 đặc, nguội, dư thì thu được dung dịch B và phần không tan D. Thêm dung dịch NaOH dư vào dung dịch B, lọc lấy kết tủa rồi đem nung đến khối lượng không đổi thì được chất rắn E. Nếu cho khí CO dư đi qua E nung nóng tới phản ứng hoàn toàn thì chất rắn thu được sau cùng có chứa
A. Cu và MgO.
B. CuO và Mg.
C. Cu và Mg.
D. Cu, Zn và MgO. Đáp án là: A. Cu và MgO. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: “Would you like something to drink?” he asked.
A. He asked me would like something to drink.
B. He wanted to invite me for something to drink.
C. He asked me if I wanted something to drink.
D. He offered me something to drink. Đáp án là: C. He asked me if I wanted something to drink. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Sau hiệp ước Nhâm Tuất, triều đình đã có hành động gì?
A. Tập trung lực lượng đàn áp các cuộc khởi nghĩa nông dân ở Trung và Bắc Kỳ.
B. Lãnh đạo nhân dân tổ chức kháng chiến.
C. Kiên quyết đòi Pháp trả lại các tỉnh đã chiếm đóng.
D. Hòa hoãn với Pháp để chống lại nhân dân. Đáp án là: A. Tập trung lực lượng đàn áp các cuộc khởi nghĩa nông dân ở Trung và Bắc Kỳ. </s> | [
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1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Nguyên nhân gây ra sóng thần chủ yếu là do
A. bão.
B. núi lửa.
C. gió.
D. động đất. Đáp án là: D. động đất </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
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29871,
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302,
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<s> Chọn đáp án đúng với câu hỏi: Ở nhiều nước trên thế giới người ta chia các ngành dịch vụ thành mấy nhóm?
A. 2 nhóm
B. 3 nhóm
C. 4 nhóm
D. 5 nhóm Đáp án là: B. 3 nhóm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho hình chóp có 20 cạnh, số mặt của hình chóp là
A. 20.
B. 11.
C. 12.
D. 10. Đáp án là: B. 11. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “hiding” in paragraph 3 is closest in meaning to ________.
A. covering
B. revealing
C. showing
D. taking Đáp án là: A. covering </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Công thức của glyxin là
A. CH 3 NH 2
B. NH 2 CH 2 COOH
C. NH 2 CH(CH 3 )COOH
D. C 2 H 5 NH 2 Đáp án là: B. NH 2 CH 2 COOH </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cho 5,6 gam Fe tác dụng với dung dịch H 2 SO 4 loãng, thể tích khí thoát ra ở đktc là:
A. 1,12 lít
B. 5,6 lít
C. 2,24 lít
D. 3,36 lít Đáp án là: C. 2,24 lít </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The following sentence can be added to the passage. Advertising is an essential part of the marketing process that can be tremendously influential in selling products. Where would it best fit in the passage?
A. [1]
B. [2]
C. [3]
D. [4] Đáp án là: A. [1] </s> | [
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<s> Chọn đáp án đúng với câu hỏi: VTV1 is a (an) ______________television channel in Viet Nam.
A. international
B. entertaining
C. local
D. national Đáp án là: D. national </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhà văn xuất sắc nhất thời Gúp-ta là ai?
A. Ka-li-đa-sa.
B. Ka-bi.
C. Ta-go.
D. Đu-son-ta. Đáp án là: A. Ka-li-đa-sa. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: The word “ converting ” is closest in meaning to...
A. changing
B. concluding
C. understanding
D. reading Đáp án là: A. changing </s> | [
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1,
1,
1,
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<s> Chọn đáp án đúng với câu hỏi: Is Mr.Smith going to have_______X-ray check tomorrow morning?
A. ∅
B. a
C. an
D. the Đáp án là: C. an </s> | [
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1317,
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1,
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1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: The woman is said _______ one million dollars to the local charity last year.
A. to donate
B. to be donated
C. to be donating
D. to have donated Đáp án là: D. to have donated </s> | [
1,
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1... |
<s> Chọn đáp án đúng với câu hỏi: (24) _______________, it allows you to build relationships with peers and adults. It also helps you to improve the quality of life.
A. another
B. other
C. others
D. the other Đáp án là: B. other </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phân tích lực F → thành hai lực F → 1 và F → 2 hai lực này vuông góc nhau. Biết độ lớn của lực F = 100 N ; F 1 = 60 N thì độ lớn của lực F 2 là:
A. F 2 = 40 N.
B. F 2 = 13600 N.
C. F 2 = 80 N.
D. F 2 = 640 N. Đáp án là: C. F 2 = 80 N. </s> | [
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1... |
<s> Chọn đáp án đúng với câu hỏi: Đoạn sông Hồng chảy trên lãnh thổ nước ta có chiều dài là
A. 126km.
B. 300km.
C. 205km.
D. 556km. Đáp án là: D. 556km </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... |
<s> Chọn đáp án đúng với câu hỏi: Cho các phát biểu sau: (a) Fomanđehit tan tốt trong nước. (b) Khử anđehit no, đơn chức bằng H 2 (xúc tác Ni, đun nóng) thu được ancol bậc hai. (c) Phenol tan tốt trong nước lạnh. (d) Ở điều kiện thường, etylen glicol hòa tan được C u ( O H ) 2 (e) Ứng với công thức phân tử C 4 H 8 có 3 đồng phân cấu tạo là anken. (g) Axetilen có phản ứng tráng bạc. Trong các phát biểu trên, số phát biểu là đúng là
A. 5
B. 4
C. 3
D. 2 Đáp án là: C. 3 </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Phương thức biểu đạt chính được sử dụng là phương thức nào?
A. Miêu tả
B. Biểu cảm
C. Tự sự
D. Nghị luận Đáp án là: B. Biểu cảm </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hiện tượng điện phân có dương cực tan là hiện tượng điện phân dung dịch
A. axit hoặc bazo với điện cực là graphit.
B. muối có chứa kim loại dùng làm catôt.
C. muối có chứa kim loại dùng làm anôt. Kết quả làm kim loại tan dần từ anot tải sang catot
D. muối có chứa kim loại dùng làm anôt. Kết quả là kim loại được tải dần từ catôt sang anôt Đáp án là: C. muối có chứa kim loại dùng làm anôt. Kết quả làm kim loại tan dần từ anot tải sang catot </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Có 4 loài động vật cùng bậc phân loại, gần nhau về nguồn gốc, phân bố tại các vị trí xác định như sau: Loài I sống ở vùng trung lưu sông. Loài II sống ở cửa sông. Loài III sống ở vùng nước khơi ở độ sâu 50m. Loài IV sống ở vùng nước khơi ở độ sâu 5000m. Trong 4 loài trên, loài nào là loài hẹp muối nhất
A. I.
B. II.
C. III.
D. IV Đáp án là: D. IV </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về hệ nội tiết ở người, khẳng định nào sau đây là không chính xác?
A. Chỉ có tuyến sinh dục mới tiết ra hoocmôn điều hoà sinh dục
B. Tuyến yên là tuyến nội tiết đóng vai trò quan trọng nhất
C. Tuyến giáp là tuyến nội tiết lớn nhất
D. Tuyến tuỵ là tuyến pha Đáp án là: A. Chỉ có tuyến sinh dục mới tiết ra hoocmôn điều hoà sinh dục </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hoocmôn nào dưới đây do phần tuỷ tuyến trên thận tiết ra?
A. Norađrênalin
B. Cooctizôn
C. Canxitônin
D. Tirôxin Đáp án là: A. Norađrênalin </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Trong các hệ đệm sau, hệ nào mạnh nhất
A. Hệ đệm prôtêinat (protein)
B. Hệ đệm bicacbonat: H 2 CO 3 /NaHCO 3
C. Hệ đệm phôtphat: NaH 2 PO 4 / NaHPO 4 -
D. Các hệ đệm mạnh như nhau Đáp án là: A. Hệ đệm prôtêinat (protein) </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Ở động vật đơn bào, thức ăn được tiêu hoá bằng hình thức nào sau đây?
A. tiêu hoá nội bào
B. tiêu hoá ngoại bào.
C. tiêu hoá ngoại bào và nội bào
D. túi tiêu hoá. Đáp án là: A. tiêu hoá nội bào </s> | [
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<s> Chọn đáp án đúng với câu hỏi: According to the passage, petroleum is described as a resource that _____________.
A. increases the cost of products.
B. is wasted on many energy demands of life.
C. is indispensable in almost all activities of the modern world.
D. is replaced by other alternatives in producing plastic bags. Đáp án là: C. is indispensable in almost all activities of the modern world. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Would you like ___________ glass of lemonade?
A. a
B. an
C. the
D. two Đáp án là: A. a </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Bài thơ Mẹ viết về điều gì?
A. Viết về mẹ và sự già đi của mẹ theo năm tháng
B. Viết về những năm tháng tần tảo của người bà
C. Viết về những tháng ngày gian khó của người bà chăm sóc cháu
D. Viết về người mẹ phải để lại đứa con cho họ hàng đi tha phương cầu thực Đáp án là: A. Viết về mẹ và sự già đi của mẹ theo năm tháng </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 4-5, hãy cho biết tỉnh nào sau đây vừa có biên giới với Lào vừa giáp biển:
A. Quảng Ninh.
B. Sơn La.
C. Điện Biên.
D. Hà Tĩnh. Đáp án là: D. Hà Tĩnh </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Este nào sau được điều chế trực tiếp từ axit và ancol
A. Etyl axetat
B. Vinyl fomat
C. Phenyl axetat
D. Vinyl axetat Đáp án là: A. Etyl axetat </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Cycling would be a practical approach to the problem of air pollution in this city.
A. debate
B. review
C. solution
D. conclusion Đáp án là: C. solution </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một xe chuyển động thẳng không đổi chiều, trong 1/3 thời gian đầu xe chạy với vận tốc 30 km/h. Trong thời gian còn lại xe chạy với vận tốc 24 km/h. Vận tốc trung bình trong suốt thời gian đi là
A. 20 km/h
B. 25 km/h
C. 26 km/h
D. 22 km/h Đáp án là: C. 26 km/h </s> | [
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<s> Chọn đáp án đúng với câu hỏi: LB Nga giáp với các biển nào ở phía tây và tây nam?
A. Biển Bắc, Ban-tích, biển Ca-xpi.
B. Ban-tích, Biển Đen, biển Ca-xpi.
C. Ba-ren, Ban-tích, Đông Xi-bia.
D. Biển Bắc, biển Ca-xpi, Biển Đen. Đáp án là: B. Ban-tích, Biển Đen, biển Ca-xpi. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Một vật m = 200g chuyển động tròn đều tâm O trong mặt phẳng Oxy với tốc độ góc ω = π (rad/s) như hình vẽ, thời điểm t 0 = 0 vật có tọa độ (-5; 0). Động lượng của vật tại thời điểm t = 0,5s có
A. độ lớn 0,0314kg.m/s; chiều là chiều âm của Ox.
B. độ lớn 0,314kg.m/s; chiều là chiều âm của Oy.
C. độ lớn 0,314kg.m/s; chiều là chiều dương của Oy.
D. độ lớn 0,0314kg.m/s; chiều là chiều dương của Ox. Đáp án là: D. độ lớn 0,0314kg </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
A. equal
B. extinct
C. legal
D. public Đáp án là: B. extinct </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Hội nghị Ban chấp hành Trung ương Đảng Cộng sản Đông Dương (tháng 11-1939) được triệu tập trong bối cảnh
A. Phát xít Nhật cấu kết với thực dân Pháp đàn áp và bóc lột nhân dân Đông Dương.
B. Thực dân Pháp thi hành chính sách Kinh tế chỉ huy.
C. Phát xít Nhật tăng cường đàn áp phong trào đấu tranh của nhân dân Đông Dương.
D. Thực dân Pháp tiến hành cuộc khai thác thuộc địa lần hai. Đáp án là: B. Thực dân Pháp thi hành chính sách Kinh tế chỉ huy. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Khi nói về hoạt động tim mạch, phát biểu nào dưới đây là đúng
A. Van 3 lá luôn đóng, chỉ mở khi tâm thất trái co.
B. Van động mạch luôn mở, chỉ đóng khi tâm thất co.
C. Khi tâm thất trái co, van hai lá sẽ đóng lại.
D. Khi tâm thất phải co, van 3 lá sẽ mở ra. Đáp án là: C. Khi tâm thất trái co, van hai lá sẽ đóng lại. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Quy luật phân li đúng với hiện tượng trội không hoàn toàn do:
A. Trong trường hợp trội không hoàn toàn các alen vẫn phân li đồng đều về các giao tử
B. F 1 chỉ thu được 1 loại kiểu hình nếu P thuần chủng khác biệt nhau bởi 1 cặp tính trạng tương phản
C. Hiện tượng trội không hoàn toàn chỉ nói về tính trạng trung gian giữa bố và mẹ
D. Tỉ lệ kiểu gen ở F 2 là 1:2:1 nếu P thuần chủng khác biệt nhau bởi 1 cặp tính trạng tương phản Đáp án là: A. Trong trường hợp trội không hoàn toàn các alen vẫn phân li đồng đều về các giao tử </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Rosa and Luis are happy to be....................... for their golden anniversary.
A. about
B. around
C. thorough
D. together Đáp án là: D. together </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Môn Địa lí không có đặc điểm nào sau đây?
A. Môn Địa lí có tính tích hợp.
B. Là nhóm môn khoa học xã hội.
C. Chuyên nghiên cứu về trái đất.
D. Bao gồm ba mạch địa lí chính. Đáp án là: C. Chuyên nghiên cứu về trái đất. </s> | [
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<s> Chọn đáp án đúng với câu hỏi: ______ being tired, they stayed until they found out exactly what had happened.
A. In spite of
B. Although
C. Because
D. However Đáp án là: A. In spite of </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Dãy nào dưới đây gồm các kim loại đều bị thụ động hóa trong HNO 3 đặc, nguội?
A. Fe, Cu, Ag.
B. Al, Fe, Ag.
C. Al, Cu, Cr.
D. Al, Fe, Cr. Đáp án là: D. Al, Fe, Cr </s> | [
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<s> Chọn đáp án đúng với câu hỏi: Nhịp tim sẽ tăng lên trong trường hợp nào sau đây
A. Khi bị khuyết tật tim (hẹp hoặc hở van tim, xơ phổi, mạch máu xơ cứng...)
B. Khi sử dụng các chất kích thích như thuốc lá, rượu, hêrôin,...
C. Tất cả các phương án còn lại
D. Khi cơ thể trải qua cú sốc nào đó: sốt cao, mất máu, mất nước hoặc lo lắng, sợ hãi kéo dài Đáp án là: C. Tất cả các phương án còn lại </s> | [
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30057,
29884,
298,
228,
190,
146,
29875,
29901,
405,
2918,
31214,
29886,
5335,
409,
30478,
11062,
207,
137,
865,
45... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Cho m gam HCOOCH 3 phản ứng hết với đung dịch NaOH (dư), đun nóng thu được 6,8 gam muối HCOONa. Giá trị của m là
A. 9.0
B. 6,0.
C. 3,0.
D. 7,4. Đáp án là: B. 6,0. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
29871,
30128,
30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
14542,
286,
24988,
379,
3217,
29949,
3210,
29871,
29941,
1374,
29874,... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Dựa vào cấu trúc nào sau đây để phân biệt vi khuẩn Gram dương (Gram +) và vi khuẩn Gram âm (Gram -)?
A. Thành tế bào.
B. Vùng nhân.
C. Màng sinh chất.
D. Plasmid. Đáp án là: A. Thành tế bào. </s> | [
1,
1,
29871,
678,
30975,
29876,
29871,
30128,
29976,
29886,
29871,
1715,
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30030,
865,
325,
31280,
29875,
274,
30057,
29884,
298,
228,
190,
146,
29875,
29901,
5334,
207,
158,
31214,
29874,
2947,
30712,
29877,
5777,
31500,
30103,... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Hòa tan hoàn toàn 20,6 gam hỗn hợp gồm N a 2 C O 3 v à C a C O 3 bằng dung dịch HCl dư, thu được V lít C O 2 (đktc) và dung dịch chứa 22,8 gam hỗn hợp muối. Giá trị của V là
A. 4,48
B. 1,79
C. 5,6
D. 2,24 Đáp án là: A. 4,48 </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,
8335,
30712,
29874,
10345,
5089,
29874,
30712,
29876,
304,
29874,
307... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Căn cứ vào Atlat Địa lí Việt Nam trang 20, cho biết các tỉnh nào sau đây có tỉ lệ diện tích rừng nhỏ hơn so với diện tích toàn tỉnh?
A. Hậu Giang, Thái Bình.
B. Quảng Trị, Quảng Ngãi.
C. Khánh Hòa, Đắk Nông.
D. Quảng Bình, Phú Yên. Đáp án là: A. Hậu Giang, Thái Bình. </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,
9243,
207,
137,
29876,
2723,
207,
158,
30103,
2947,
30712,
29877,
2... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Một chiếc ô tô chuyển động đều đi được đoạn đường 24km trong 25 phút. Lực cản của mặt đường là 500N. Công suất của ô tô là:
A.800W
B. 8kW
C. 80kW.
D. 800kW Đáp án là: B. 8kW </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,
4546,
31214,
31500,
29873,
521,
347,
31500,
30103,
29883,
288,
31500,... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: Trường hợp không xảy ra phản ứng hoá học là:
A. Fe + dung dịch F e C l 3
B. Fe + dung dịch HCl
C. Cu + dung dịch F e C l 3
D. Cu + dung dịch F e C l 2 Đáp án là: C. Cu + dung dịch F e C l 3 </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,
17238,
207,
158,
29877,
207,
158,
30712,
865,
5089,
207,
158,
31214... | [
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,
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,
1,
1,
1,
1,
1,
1... |
<s> Chọn đáp án đúng với câu hỏi: (THPT Đồng Đậu – Vĩnh Phúc – lần 1 2019): Một phân tử mARN nhân tạo được tổng hợp trong ống nghiệm có trình tự các nuclêôtit là: 5’AUGAXUAAXUAXAAGXGA3’. Nếu đột biến xảy ra làm mất nuclêôtit loại X ở vị trí 12 trên phân tử mARN thì chuỗi pôlipeptit được tổng hợp từ phân tử mARN đột biến nói trên có số axit amin (tính cả axit amin mở đầu) là:
A. 5
B. 3
C. 6
D. 4 Đáp án là: B. 3 </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,
313,
29911,
3954,
29911,
29871,
30250,
29877,
31500,
30712,
865,
2987... | [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
1,
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,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1... |
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