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1. A. SwitchB. swimC. answerD. sway
2. A. RatherB. sacrificeC. hardD. father
3. A. SomeB. comeC. loveD. home
4. A. Whole B. whiteC. which D. where
5. A.LookB. bloodC. GoodD. foot
II. Grammar & vocabulary: ( 5,0 points) Choose the best answer A, B, C or D for each sentence.
6. The house.......I lived as a child has been pulled down now.
A. who B. whichC. whose D. that
7. Is that the button...........you pressed.
A. whoseB. whoC. which D. whom
8. The moon is a.............................
A. star B. satelliteC. planet D. global
9. The earth receives..............of the sun’s heat and light.
A. all B. mostC. some D . few
10. The man............I saw last week said something totally different.
A. whoseB. thatC. whomD. which
11. Stop him. He’s the man..............stole my wallet.
A. that B. whom C. whose D. who
12. There are a lot of books.................in this library.
A. for you B. to read C. are reading D.which read
13. It..............that only 1000 pandas remain in the wind.
A. are estimated B. was estimatedC. were estimated D.is estimated
14. Dinosaurs became..............millions of years ago.
A. protect B. extinctC. develop D . increase
15. If the wind doesn’t .............., there is no wind energy.
A. blowB. flowC. flew D. fly
16. grass for animals is a .................resource
A.nonrenewableB. limited C.renewable D. clear
17. water power gives energy...........................pollution
A. withB. withoutC. withinD. With of
18. Coal is nonrenewable because it takes.......................to make it.
A. billions of years B. one billion years
C. Millions of years D.Twomillions year
19. I must thank the man from..................I got the present.
A.who B. whomC. which D.that
20. All kind of..............and plants should be protected.
A. tree B. trees C. animal D . animals
21. Solar energy is .....................plentiful and unlimited................clean and safe.
A. not only/ but alsoB.so/ that C. Too/to D.such/that
22. I’m working on a film.....................main office is in LonDon.
A. whichB. whose C. that D. whom
23. The blue whale is a(n).......................species.
A. endangeredB. extincted C. developed D. changed
24. I met a lot of new people at the party............names I can remenber.
A. their B. who C. which D. whose
25. The story.................I listened yesterday was interesting.
A. about whichB for whichC. To whichD. Of which
Đáp án D
Giải thích
Devote st to st: Cống hiến cái gì cho cái gì
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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#Yumi
Đáp án C
remember to Vnt: Nhớ phải làm gì
Remember + Ving: Nhớ đã làm gì