安徽工程大学《大学英语四》(重修)练习五

《大学英语四》（重修）练习五

Part I.Reading Comprehension

Directions:There are two passages in this part.Each passage is followed by5questions,with four choices given for each question.Please decide on the best choice.

Passage1

On October12,1989,some Chinese scientists were working at the computers to look for the information they needed.Suddenly they saw a lot of very bright spots crossing the computer’s screens.At the same moment the computers were working much slower.To find out what was happening they stopped their work to look over some parts of the computers.To their surprise, they found out that most of their stored information was got rid of by computer viruses(病毒)!It’s clear that all these computers had been infected(传染)by computer viruses.

It is said that the computer viruses were made by a group of young men interested in playing tricks.They all had a lot of computer knowledge.They made the viruses just to show their cleverness.This kind of computer viruses is named Jerusalem Viruses.These viruses can stay in computer for a long time.When the time comes they will hit the computers by lowering the functions,breaking their usual programs or even getting rid of all the information.

We now come to know that Jerusalem Viruses often hit computers on Friday and that they are visiting a lot of computers.Among the countries that had computer viruses last year are Britain, Australia,Switzerland and the US.But till now,how to get rid of the terrible viruses is still a problem.

1.On October12,1989,some Chinese scientists operated the computers to_____.

A.repair some parts of them

B.get rid of the very bright spots

C.look for Jerusalem Viruses

D.look for what they wanted

2.The group of young men made the viruses to.

A.break all the computers

B.tell people they hated computers

C.show they were clever

D.get more knowledge about computers

3.Which of the following is the most serious result by the viruses?

A.The computer’s functions are lowered.

B.The usual programs are got rid of.

C.Some parts of the computer are broken.

D.All the information in the computer is missing.

4.When a computer is infected with the viruses,it will.

A.stop working

B.no longer be useful

C.not work as usual

D.not keep the information for long

5.According to the passage,computer viruses seem to be.

A.in any computer

B.difficult to get rid of

C.easy to make

D.on computer’s screens

Passage2

If you are like most people,your intelligence various from season.You are probably a lot sharper in the spring than you are at any other time of year.A noted scientist,Ellsworth Huntington(1876-1947),concluded from other men’s work and his own among the people in different climates that climate and temperature have a definite effect on our mental abilities.

He found that cool weather is much more favorable for creative thinking than in summer heat. This does not mean that all people are less intelligent in summer than they are during the rest of the year.It does mean,however,that the mental abilities of large numbers of people tend to be lowest in summer.

Spring appears to be the best period of the year for thinking.One reason may be that in the spring man’s mental abilities are affected by the same factors that bring about great changes in all nature.

Fall is the next–best season,then winter.As for summer,it seems to be a good time to take a long vacation from thinking.

1.According to the passage,man’s intelligence_______.

A.stays the same throughout the year.

B.various from day to day.

C.changes with seasons

D.changes from year to year.

2.Ellsworth Huntington decides that climate and temperature have_______.

A.a great effect on everyone’s intelligence.

B.some effect on most people’s intelligence.

C.some effect on a few people’s intelligence.

D.no effect on most people’s intelligence.

3.Ellsworth Huntington’s conclusion was based on______

A.variations of his own mental abilities from season to season.

B.the results of research done by him and other scientists among people in different climates.

C.detailed records of temperature changes in different places.

D.detailed records of different ways of thinking among peoples in different climates.

4.Why does the author say summer is a good time to take a long vacation from thinking?

A.because a long vacation in summer helps to improve people’s mental power.

B.because people tend to be less creative during summer.

C.because summer is a good time for outdoor activities.

D.because mental exertion in the summer heat taxes too much of people’s energy.

5.The central idea of this passage is_________.

A man’s mental abilities change from season to season

B man’s intelligence various from place to place

C man should take a long vacation in summer

D if you want to do creative thinking,go to a cool place