1999年6月大学英语六级考试试题

　　Part I Listening Comprehension (20 minutes)SectionADirections:Inthis section, you will hear 10 short conversations.At the end ofeach conversation, a question will be asked about whatwas said.Both the conversation and the question will be spoken onlyonce.After each question there will be a pause. During the pause,youmust read the four choices marked A), B), C) and D),　anddecidewhich is the best answer. Then mark the corresponding letteronthe　Answer Sheet with a single line through thecentre.Example:

　　You will hear:

　　You will read:

　　A) 2 hours.

　　B) 3 hours.

　　C) 4 hours.

　　D) 5 hours.

　　From the conversation we know that the two are talking aboutsomework they will start at 9 o clock in the morning and have tofinishat 2 in the afternoon. Therefore, D)5 hoursis thecorrectanswer. You should choose [D] on the Answer Sheet and markit witha single line through the centre.

　　Sample Answer [A] [B] [C] [D]

　　1. A) The man attended the concert, but didn t like it.

　　B) The man was sorry to miss the football game.

　　C) The man is more interested in football than inclassicalmusic.

　　D) The man was sorry that he didn t attend the concert.

　　2. A) Singing loudly.

　　B) Listening to music.

　　C) Studying.

　　D) Talking on the phone.

　　3. A) She can t receive any calls.

　　B) She can t make any calls.

　　C) It doesn t work at all.

　　D) It s beyond repair.

　　4. A) Tom is very responsible. C) What Tom said is true.

　　B) Tom s words aren t reliable. D) Tom is not humorous atall.

　　5. A) How to use a camera. C) How to use a keyboard.

　　B) How to use a washer. D) How to use a tape recorder.

　　6. A) They should put the meeting to an end.

　　B) They should hold another meeting to discuss the matter.

　　C) She would like to discuss another item.

　　D) She wants to discuss the issue again later.

　　7. A) He believes the Browns have done a sensible thing.

　　B) He doesn t think the Browns should move to another place.

　　C) He doesn t think the Browns investment is a wise move.

　　D) He believes it is better for the Browns to invest later.

　　8. A) He may convert it and use it as a restaurant.

　　B) He may pull it down and build a new restaurant.

　　C) He may rent it out for use as a restaurant.

　　D) He may sell it to the owner of a restaurant.

　　9. A) She doesn t like the way the professor lectures.

　　B) She s having a hard time following the professorslectures.

　　C) She is not interested in the course.

　　D) She s having difficulty with the heavy readingassignments.

　　10. A) He never keeps his promises. C) He has changedhismind.

　　B) He is crazy about parties. D) He is not sociable.SectionBCompound Dictation注意： 听力理解的 B 节 ( Section B ) 为复合式听写 (CompoundDictation ) ，题目在试卷二上。现在请取出试卷二。Part IIReading Comprehension(35minutes)Directions:There are 4 reading passages in this part.Eachpassage is followed by some questions or unfinished statements.Foreach of them there are four choices marked A), B), C) and D).Youshould decide on the best choice and mark thecorresponding　letteron the Answer Sheet with a single line throughthe centre.Questions11 to 15 are based on the followingpassage:

　　We sometimes think humans are uniquely vulnerable to anxiety,butstress seems to affect the immune defenses of lower animals too.Inone experiment, for example, behavioral immunologist (免疫学家)MarkLaudenslager, at the University of Denver, gave mildelectricshocks to 24 rats. Half the animals could switch off thecurrent byturning a wheel in their enclosure, while the other halfcould not.The rats inthe two groups were paired so that each timeone ratturned the wheel it protected both itself and its helplesspartnerfrom the shock. Laudenslager found that the immune responsewasdepressed below normal in the helpless rats but not in thosethatcould turn off the electricity. What he has demonstrated,hebelieves, is that lack of control over an event, not theexperienceitself, is what weakens the immune system.

　　Other researchers agree. Jay Weiss, a psychologist atDukeUniversity School of Medicine, has shown that animals whoareallowed to control unpleasant stimuli don t developsleepdisturbances or changes in brain chemistry typical ofstressedrats. But if the animals are confronted with situationsthey haveno control over, they later behave passively when facedwithexperiences they can control. Such findings reinforcepsychologistssuspicions that the experience or perception ofhelplessness is oneof the most harmful factors in depression.

　　One of the most startling examples of how the mind can altertheimmune response was discovered by chance. In 1975psychologistRobert Ader at the University of Rochester School ofMedicineconditioned (使形成条件反射) mice to avoid saccharin（糖精）bysimultaneouslyfeeding them the sweetener and injecting them with adrug thatwhile suppressing their immune systems caused stomachupsets.Associating the saccharin with the stomach pains, the micequicklylearned to avoid the sweetener. In order to extinguish thisdislikefor the sweetener, Ader re-exposed the animals to saccharin,thistime without the drug, and was astonished to find that thosemicethat had received the highest amounts of sweetener duringtheirearlier conditioning died. He could only speculate that he hadsosuccessfully conditioned the rats that saccharin alone nowservedto weaken their immune systems enough to kill them.

　　11. Laudenslager s experiment showed that the immune systemofthose rats who could turn off the electricity . A) wasstrengthenedC) was altered

　　B) was not affected D) was weakened

　　12. According to the passage, the experience ofhelplessnesscauses rats to .

　　A) try to control unpleasant stimuli B) turn offtheelectricity

　　C) behave passively in controllable situations D)becomeabnormally suspicious

　　13. The reason why the mice in Ader s experiment avoidedsaccharinwas that .

　　A) they disliked its taste B) it affected their immunesystems

　　C) it led to stomach pains D) they associated itwithstomachaches

　　14. The passage tells us that the most probable reason forthedeath of the mice in Ader s experiment was that .

　　A) they had been weakened psychologically by the saccharin

　　B) the sweetener was poisonous to them

　　C) their immune systems had been altered by the mind

　　D) they had taken too much sweetener duringearlierconditioning

　　15. It can be concluded from the passage that the immunesystemsof animals .

　　A) can be weakened by conditioning B) can be suppressed bydruginjections

　　C) can be affected by frequent doses of saccharin D) canbealtered by electric shocks【1】 【2】 【3】 【4】