大学英语三级考试考前辅导练习十五
1.Which of the following does NOT play any role in the bat’s radar system?
A. Ears B. NoseC. Eyes D. Mouth
2.When their eyes and ears were covered, bats__________
A. still managed to fly fairly well
B. could fly with only moderate success
C. could not fly at all
D. were unable to fly without collision
3.Which of the following statements is NOT true?
A. There is still something about bats’ flight which scientists do not know.
B. Bats have their inborn radar systems.
C. Bats can fly successfully even in the dark.
D. It is the supersonic squeaks we hear that guide bats in flight.
4.The secret of bats’ flexible flight lies in the fact that bats____________.
A. have the ability to receive the echoes of supersonic sound sent out by themselves.
B. have the ability to receive the sound-waves emitted by the objects ahead.
C. are born with excellent flying skills
D. have good eyes which can see objects even in the dark.
5.The radar was invented__________.
A. on the basic of the experiments with bats.
B. According to bats’ flight principle.
C. before the discovery of the secret of bats’ flight.
D. after the discovery of the secret of bats’ flight.
Passage 9
Personal computers and the Internet give people new choices about how to spend their time. Some may use this freedom to share less time with certain friends or family members, but new technology will also let them stay in closer touch with those they care most about. I know this from personal experience.
E-mail makes it easy to work at home, which is where I now spend most weekends and evenings. My working hours aren’t necessarily much shorter than they once were, but I spend fewer of them at the office. This lets me share more time with my young daughter than I might have if she’d been born before electronic mail because such a practical tool.
The Internet also makes it easy to share thoughts with a group of friends. Say you do something fun see a great movie, perhaps and there are four or five friends who might want to hear about it. If you call each one, you may tire of telling the story.
With e-mail, you just write one note about your experience, at your convenience, and address it to all the friends you think might be interested. They can read your message when they have time, and read only as much as they want to. They can reply at their convenience, and you can read what they have to say at your convenience.
E-mail is also an inexpensive way to stay in close touch with people who live far away. More than a few parents use e-mail to keep in touch, even daily touch, with their children off at college.
We just have to keep in mind that computers and the Internet offer another way of staying in touch. They don’t eliminate any of the old ways.
1.The purpose of this passage is to _____________.
A. explain how to use the Internet
B. describe the writer’s joy of keeping up with the latest technology.
C. tell the merits and usefulness of the Internet
D. introduce the reader to basic knowledge about personal computers and the Internet
2.The use of e-mail has made it possible for the winter to ______________.
A. spend less time working
B. have more free time with his child
C. work at home on weekends
D. work at a speed comfortable to him
3.According to the writer, e-mail has an obvious advantage over the telephone because the former helps one______________.
A. reach a group of people at one time conveniently
B. keep one’s communication as personal as possible
C. pass on much more information than the latter
D. get in touch with one’s friends faster that the later
4.The passage discussed all the following aspects of e-mail EXCEPT___________.
A. its cost
B. the format of writing
C. the saving of time
D. its easy and convenient use
5.The best title for this passage is _______________.
A. Computers: New Technological Advances
B. Internet: a New Tool to Maintain Good Friendship
C. Computers Have Made Life Easier
D. Internet: a Convenient Tool for Communication
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