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27 tháng 6 2018

Đáp án D => sinks

Cấu trúc song song, 2 vế trước động từ đều chia ở dạng thức thời hiện tại đơn nên sinking phải được chuyển thành sinks

3 tháng 1 2018

Đáp án D

2 tháng 2 2019

Đáp án D

26 tháng 12 2019

Đáán B

Gii thích:  Câu hi này v ng động t (phrase verb)                                        

•pick st up = lift st up: nâng lên, làm bay đ

“As the wind blows over the land, it often picks up small grains of sand.” – Khi cơn gió thi qua mt miđất, nó thường làm bay đi nhng cát nh.

•clean st out: ly cp, làm sch hoàn toàn bên trong 

VD: I must clean the fish tank out. (Tôi phi làm sch bên trong b cá.)

•carry st out: thc hiđiu gì

•hold st up: trì hoãn, ly c

29 tháng 11 2019

Đáán D

Gii thích: hillside: (n) sườđồi

“When particles of rocks or soil became loosened in any way, running water carries them down the hillsides.” – Khi các hòn đấđá tr nên tơi ra, nước xoáy làm chúng rơi xung sườđồi. 

•Phương án sai: border: (n) biên gii (gia 2 vùng hoc 2 quc gia)

•Phương án sai: topside: phn ni lên trên mt nước ca chiếc tàu; súc tht bò ct ra t phn trên ca chân

•Phương án sai: backside: (trượt tuyết) mt gót 

20 tháng 6 2017

Đáán C

Gii thích: Tính t little ch s khan hiếm hoc thiếu và gn như mang nghĩa ph định được dùng trước danh t không đếđược (trong câu này là soil: đất trng). Ta có th dùng trng t ch mđộ so/ very để b nghĩa cho tính t little. 

“Land that is covered with trees, grass and other plants wears away very slowly, and so loses very little of its soil.” – Đấđược bao ph bi cây ci, c và các loi thc vt khác b trôi đi rt chm, và như thế mt rt ít đất trng.

13 tháng 5 2017

Đáán D

Gii thích: melting: (adj) tan chy. Tính t ‘melting’ có dng V_ing ch tính cht ca tuyết. 

“In the spring, the melting snow turns into a large quantity of water that then runs downhill in streams.” – Vào mùđông, tuyết tan chy biến thành mt lượng nước khng l và chy xung các con sui.

25 tháng 3 2018

Đáán D

Gii thích: help to do st: giúp đỡ 

“Thus, forests and grasslands help to slow down erosion.” – Do đó, rng và đồng c giúp làm chm li s xói mòn.

Choose from A, B, C, or D the one that best answers each of the questions. A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds...
Đọc tiếp

Choose from A, B, C, or D the one that best answers each of the questions. A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms. 51. What is the main topic of this passage? A. The nature of radar. B. History of radar. C. Alternatives to radar. D. Types of ranging. 52. According to the passage, what can radar detect besides location of objects? A. Shape B. Size C. Speed D. Weight 53. The word “exemplified” in the passage can be replaced by_________. A. “specified” B. “resembled” C. “illustrated” D. “justified” 54. The word “shouts” in the passage most closely means_________. A. “exclaims” B. “yells” C. “shoots” D. “whispers” 55. Which of the following words best describes the tone of this passage? A. argumentative B. explanatory C. humorous D. imaginative 56. According to the passage, the distance between a radar set and an object can be determined by_________. A. the time it takes for a burst of radio waves to produce echoes when the waves bounce off the object B. the term “ranging” used for detection of the distance between an object and the radar set C. the time it takes for the radio waves to produce echoes and bounce off the object D. the time it takes for the echoes produced by the radio waves to return to the radar set 57. Which type of waves does radar use? A. tidal B. sound C. heat D. radio 58. The word “tracking” in the passage most closely means_________. A. sending B. searching for C. ranging D. repairing 59. Which of the following would most likely be the topic of the next paragraph? A. A history of flying. B. Other uses of radar. C. The technology used by pilots. D. Uses of some technology. 60. What might be inferred about radar? A. It takes the place of a radio. B. It has improved navigational safety. C. It was developed from a study of sound waves. D. It gave birth to the invention of the airplane.
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10 tháng 6 2019

Choose from A, B, C, or D the one that best answers each of the questions.

A pilot cannot fly by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot how fast nearby planes are moving. The basic principle of radar is exemplified by what happens when one shouts in a cave. The echo of the sounds against the walls helps a person determine the size of the cave. With radar, however, the waves are radio waves instead of sound waves. Radio waves travel at the speed of light, about 300,000 kilometers in one second. A radar set sends out a short burst of radio waves. Then it receives the echoes produced when the waves bounce off objects. By determining the time it takes for the echoes to return to the radar set, a trained technician can determine the distance between the radar set and other objects. The word “radar”, in fact, gets its name from the term “radio detection and ranging”. “Ranging” is the term for detection of the distance between an object and the radar set. Besides being of critical importance to pilots, radar is essential for air traffic control, tracking ships at sea, and for tracking weather systems and storms.

51. What is the main topic of this passage?

A. The nature of radar. B. History of radar. C. Alternatives to radar. D. Types of ranging.

52. According to the passage, what can radar detect besides location of objects?

A. Shape B. Size C. Speed D. Weight

53. The word “exemplified” in the passage can be replaced by_________.

A. “specified” B. “resembled” C. “illustrated” D. “justified”

54. The word “shouts” in the passage most closely means_________.

A. “exclaims” B. “yells” C. “shoots D. “whispers”

55. Which of the following words best describes the tone of this passage?

A. argumentative B. explanatory C. humorous D. imaginative

56. According to the passage, the distance between a radar set and an object can be determined by_________.

A. the time it takes for a burst of radio waves to produce echoes when the waves bounce off the object

B. the term “ranging” used for detection of the distance between an object and the radar set

C. the time it takes for the radio waves to produce echoes and bounce off the object

D. the time it takes for the echoes produced by the radio waves to return to the radar set

57. Which type of waves does radar use?

A. tidal B. sound C. heat D. radio

58. The word “tracking” in the passage most closely means_________.

A. sending B. searching for C. ranging D. repairing

59. Which of the following would most likely be the topic of the next paragraph?

A. A history of flying. B. Other uses of radar. C. The technology used by pilots. D. Uses of some technology.

60. What might be inferred about radar?

A. It takes the place of a radio. B. It has improved navigational safety. C. It was developed from a study of sound waves. D. It gave birth to the invention of the airplane.

Làm bài này rối não quá hiha

#Yumi