1994年01月英语四级试题（阅读）

Part II Reading Comprehension (35 minutes)
Passage One
Questions 21 to 25 are based on the following passage.
Suppose we built a robot (机器人) to explore the planet Mars. We provide the robot with seeing detectors to keep it away from danger. It is powered entirely by the sun. Should we program the robot to be equally active at all times? No. The robot would be using up energy at a time when it was not receiving any. So we would probably program it to cease its activity at night and to wake up at dawn the next morning.
According to the evolutionary (进化的) theory of sleep, evolution equipped us with a regular pattern of sleeping and waking for the same reason. The theory does not deny (否认) that sleep provides some important restorative functions. It merely says that evolution has programmed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well when we are in familiar, safe place, but we sleep lightly, if at all, when we fear that bears will nose into the tent.
The evolutionary theory accounts well for differences in sleep among creatures. Why do cats, for instance, sleep so much, while horses sleep so little? Surely cats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.
21. The author uses the example of the robot in space exploration to tell us ______.
(A) the differences between robots and men (C) about the need for robots to save power
(B) the reason why men need to sleep (D) about the danger of men working at night

22. Evolution has programmed man to sleep at night chiefly to help him ______.
(A) maintain a regular pattern of life (C) avoid danger and inefficient labor
(B) prevent trouble that comes looking for him (D) restore his bodily functions

23.According to the author, we cannot sleep well when we _____.
(A) are worrying about our safety (C) are in a tent
(B) are overworked (D) are away from home

24.Cats sleep much more than horses do partly because cats _____.
(A) need more time for restoration
(B) are unlikely to be attackers
(C) are more active than horses when they are awake
(D) spend less time eating to get enough energy

25.Which of the following is the main idea of the passage? ______.
(A) Evolution has equipped all creatures with a regular pattern of sleeping and waking.
(B) The study of sleep is an important part of the evolutionary theory.
(C) Sleeping patterns must be taken into consideration in the designing of robots.
(D) The sleeping pattern of a living creature is determined by the food it eats.

Passage Two
Questions 26 to 30 are based on the following passage.
" Congratulations, Mr. Jones, it’s a girl."
Fatherhood is going to have a different meaning and bring forth a different response from every man who hears these words. Some feel pride when they receive the news, while others worry, wondering whether they will be good father. Although there are some men who like children and may have had considerable experience with them, others do not particularly care for children and spend little time with them. Many fathers and mothers have been planning and looking forward to children for some time. For other couples, pregnancy (怀孕27. It is stated in the passage that _____.
(A) some parents are not prepared to have a child
(B) young couples do not like children at all
(C) working couples do not have much time to take care of their children
(D) many parents look forward to having a boy as their first child

28. In the second paragraph, the author ______.
(A) criticizes fathers for not taking enough responsibilities in bringing up their children {}
(B) excuses the American writers for ignoring the difficulties of being a father
(C) supports the idea that the chief role of a father is to earn money for the family
(D) complains about the lack of social programs to help husbands adjust themselves to being a father

29. The transition to the mother’s role requires that the wife ______.
(A) change her life style in a highly innovative way
(B) make a complete change in her everyday life to deal with the new situation
(C) stay at home to take care of the baby
(D) help her husband in his resocialization process

30. Some writers argue that with respect to the change of roles, fathers, compared with mothers, _____.
(A) have to shoulder more burdens (C) have an easier job to do
(B) have to make more difficult adaptations (D) can usually do a better job

Reading is thought to be a kind of conversation between the reader and the text. The reader puts questions, as it were, to the text and gets answers. In the light of these he puts further questions, and so on.
For most of the time this "conversation" goes on below the level of consciousness. At times, however, we become aware of it. This is usually when we are running into difficulties, when mismatch is occurring between expectations and meaning. When successful matching is being experienced, our questioning of the text continues at the unconscious level.
Different people converse with the text differently. Some stay very close to the words on the page; others take off
imaginatively from the words, interpreting, criticizing, analyzing and examining. The former represents a kind of
comprehension which is written in the text. The latter represents higher levels of comprehension. The balance between these is important, especially for advanced readers.
There is another conversation which from our point of view is equally important, and that is to do not with what is read but with how it is read. We call this a "process" conversation as opposed to a "content" conversation. It is concerned not with meaning but with the strategies (策略Reading as a kind of conversation between the reader and the text becomes conscious only when _____.
(A) the reader’s expectations agree with what is said in the text
(B) the reader has trouble understanding what the author says
(C) the reader asks questions and gets answers
(D) the reader understands a text very well

32. At a lower level of comprehension, readers tend to _____.
(A) read a text slowly (C) interpret a text in their own way
(B) read without thinking hard (D) concentrate on the meaning of words only

33. A "process" conversation has to do with ______.
(A) the application of reading strategies
(B) matching our expectations with the meaning of a text
(C) the development of our ability to check the details
(D) determining the main idea of a text

34. According to the passage, it is of great importance for readers at a higher level to maintain a balance between ______.
(A) conscious and unconscious levels of comprehension
(B) the reader’s expectations and the meaning of a text
(C) lower and higher levels of comprehension
(D) interpreting and criticizing a text

35. If we want to develop our reading ability at an advanced level, we should ______.
(A) learn to use different approaches in reading different texts
(B) make our reading process more conscious
(C) pay more attention to the content of a text
(D) take a critical attitude towards the author’s idea

Central Valley doesn’t generally experience the atmospheric sound and lightning that can accompany those rains, it’s still important for parents to be able to answer the youthful questions about thunder and lightning.
The reason these two wonders of nature are so difficult for many adults to explain to children is that they are not very well understood by adults themselves. For example, did you know that the lightning we see flashing down to the earth from a cloud is actually flashing up to a cloud from the earth? Our eyes trick us into thinking we see a downward motion when it’s actually the other way around. But then, if we believed only what we think we see, we’d still insist that the sun rises in the morning and sets at night.
Most lightning flashes take place inside a cloud, and only a relative few can be seen jumping between two cloud or between
earth and a cloud. But, with about 2,000 thunderstorms taking place above the earth every minute of the day and night, there’s enough activity to produce about 100 lightning strikes on earth every second.
Parents can use thunder and lightning to help their children learn more about the world around them. When children understand that the light of the lightning flashing reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval between the flash and the crash to learn how close they were to the actual spark.
36. According to the author, in the area of the Central Valley, ______.
(A) rains usually come without thunder and lightning
(B) it is usually dry in April
(C) children pay no attention to natural phenomena
(D) parents are not interested in thunder and lightning

37. We believe that lightning is a downward notion because ______.
(A) we were taught so by our parents from our childhood
(B) we are deceived by our sense of vision
(C) it is a common natural phenomenon
(D) it is a truth proved by science

38. What is TRUE about lightning according to the passage?
(A) Only a small number of lightning flashes occur on earth.
(B) Lightning travels 5 minutes faster than thunder.
(C) Lightning flashes usually jump from one cloud to another.
(D) There are far more lightning strikes occurring on earth than we imagine.

39. The word "activity" (Para. 3, Line 3) is most closely related to the word(s) _____.
(A) "cloud" (C) "lightning flashes"
(B) "lightning strikes" (D) "thunderstorms"

40. It can be concluded from the passage that ______.
(A) we should not believe what we see or hear
(B) things moving downward are more noticeable
(C) people often have wrong concepts about ordinary phenomena
(D) adults are not as good as children in observing certain natural phenomena