阅读理解

阅读下列短文，从各题所给的A、B、C、D四个选项中，选出最佳选项。

　　The biggest safety - threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the past 15 years, pilots have reported well over 100 incidents that have been caused by electromagnetic interference (电磁干扰). The source of this interference remains unconfirmed, but increasingly, experts point the blame at portable computers, radios and cassette players and mobile telephones.

　　RTCA, an organization which advises the aviation (航空) industry, has recommended that all airlines ban (禁止) such devices from being used during “critical” stages of flight, particularly take - oft and landing. Some experts have gone further, calling for a total ban during the flight. Currently, rules on using these devices are left up to individual airlines. And although some airlines forbid passengers from using such equipment during take - off and landing, most are reluctant (勉强) to enforce a total ban, given that many passengers want to work during the flight.

　　The difficulty is predicating how electromagnetic fields might affect an aircraft's computers. Experts know that portable devices give out radiation, which affects wave lengths which aircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not.

　　The fact that aircraft may be vulnerable (易受损的) to interference raises the risk that terrorists may use a radio system in order to damage navigation equipment.

1．The passage above mainly talks about ________.

[　　]

A．a new rule for airlines

B．the disadvantages of electronic devices

C．a possible cause of aircraft crashes

D．safety measures for air flight

2．Over 100 air- crash incidents have taken place during the past fifteen years, the reason is probably that ________.

[　　]

A．they may have been caused by the damage to the radio system

B．they may have taken place during the take - off and landing

C．they were proved to have been caused by the passengers' portable computers

D．the pilots are not expert at electromagnetics

3．Few airlines wish to entirely forbid passengers to use electric devices because ________.

[　　]

A．they don't believe in such a danger as radio interference

B．the harmful effect of them is yet to be proved

C．most passengers don't want to take a plane which doesn't allow the use of radios or cassette players

D．they will take other safety measures

4．It can be inferred from the passage that the writer ________.

[　　]

A．is in favor of forbidding passenger's use of electronic devices completely

B．hasn't formed his own opinion on the problem

C．regards it as unreasonable to forbid using electric devices during the flight completely

D．strongly believe that air incidents are caused by electromagnetic interference

Three years ago, five parrots were set free in a wild place of Arizona, thousands of miles from the Channel Islands in Jersey where they had been looked after by zookeepers. No evolutionary strategies informed them how to behave in this new landscape of mountainous pine forest unoccupied by their king for 50 years. To the researchers’ surprise, they failed to make contact with a group of wild parrots imported from Mexico and set free at the same time. Within 24 hours the reintroducing ended in failure, and the poor birds were back in cages, on their way to the safety of the Arizona reintroduction programme.

Ever since then, the programme has enjoyed great success, mainly because the birds now being set free are Mexican birds illegally caught in the wild, confiscated （没收） on arrival north of the border, and raised by their parents in the safety of the programme. The experience shows how little we know about the behaviour and psychology（心理） of parrots, as Peter Bennett, a bird researcher, points out:” Reintroducing species of high intelligence like parrots is a lot more difficult. People like parrots, always treating them as nothing more than pets or valuable ‘collectables’.”

Now that many species of parrot are in immediate danger of dying out, biologists are working together to study the natural history and the behaviour of this family of birds. Last year was an important turning point: conservationists founded the World Parrot Trust, based at Hayle in Cornwall, to support research into both wild and caged birds.

Research on parrots is vital for two reasons. First, as the Arizona programme showed, when reintroducing parrots to the wild, we need to be aware of what the birds must know if they are to survive in their natural home. We also need to learn more about the needs oft parrots kept as pets, particularly as the Trust’s campaign does not attempt to discourage the practice, but rather urges people who buy parrots as pets to choose birds raised by humans.

1．What do we know about the area where the five parrots were reintroduced?

A．Its landscape is new to parrots pf their king.

B．It used to be home to parrots of their kind.

C．It is close to where they had been kept.

D．Pine trees were planted to attract birds.

2．The reintroducing experience three years ago shows that man-raised parrots ______. 

A．can find their way back home in Jersey

B．are unable to recognize their parents

C．are unable to adapt to the wild

D．can produce a new species

3．Why are researches on parrots important according to the passage?

A．The Trust shows great concern for the programme.

B．We need to knows more about how to preserve parrots  

C．Many people are interested in collecting parrots.

D．Parrots’ intelligence may some day benefit people.

4．According to the passage, people are advised_______.

A．to treat wild and caged parrots equally

B．to set up comfortable homes for parrots

C．not to keep wild parrots as pets 

D．not to let more parrots go to the wild

A young student was one day taking a walk with a professor, who was commonly    21   the students’ friend. As they went    22    , they saw lying in the path a pair of old    23    , which they supposed to belong to a poor man who was employed in a   24   close by. The student turned to the professor, saying, “Let’s play the man a   25  : We will hide his shoes, and 26   ourselves behind those bushes, and wait to see his   27  when he cannot find them.”
“My young friend,” answered the professor, “we should never   28   ourselves at the   29   of the poor. But you are   30  , and may give yourself a much greater   31  by means of the poor man. Put a coin into each shoe, and then we will hide ourselves and   32   how the discovery affects him.” The student did so, and they both placed themselves behind the bushes. The poor man soon finished his work, and came   33  the field to the path   34   he had left his coat and shoes. While   35  his coat he slipped his foot into one of his shoes; but feeling   36 , he stopped down to feel   37  it was, and found the coin. Astonishment and wonder were seen upon his face. He now put the money into his pocket, but his  38  was doubled on finding the other coin. He fell upon his knees, looked up to heaven and uttered aloud a fervent（热烈的）thanksgiving, in which he   39  his wife, sick and helpless, and his children without bread. The student stood there deeply   40 , and his eyes filled with tears.

五、Cloze test(完形填空)20分
When Dave was eighteen,he bought a second-hand car for ￡200 so that he could travel to and from work more 　1　 than by bus.It worked quite well for a few years,but then it got so old,and it was costing him 　2　 much in repairs that he decided that he had better 　3　 it.
He asked among his friends to see if anyone was particularly 　4  to buy a cheap car,but they all knew that it was falling to pieces,so  5  of them had any desire to buy it.
Dave's friend Sam saw that he was  6  when they met one evening,and said,“What's  7 ,Dave?” Dave told him and Sam answered,“Well,what about advertising it in the paper? You may   8  more for it that way than the cost of the advertisement!” Thinking that Sam's   9  was sensible,he put an advertisement in an evening paper,which read:“For sale:small car,  10  very little petrol,only two owners.Bargain at ￡50.”
For two days after the advertisement first appeared,there was no   11 .But then on Saturday evening a man rang up and said he would like to  12  him about the car.“All right,” Dave said,feeling happy.He asked the man whether ten o'clock the next morning would be   13  or not.“Fine,” the man said.“And I'll  14  my wife.We intend to go for a ride in it to   15  it.”
The next morning,at ten quarter,Dave parked the car in the square outside his front door,  16  to wait there for the person who had   17  his advertisement.Even Dave had to   18  that the car really looked like a wreck.Then soon after he had got the car as   19  as it could be,a police car stopped just behind him and a policeman got out.He looked at Dave's car and then said,“Have you reported this   20  to us yet,sir?”
1.A.directly           B.safely                 C.properly                    D.easily
2.A.so                          B.such                          C.very                          D.too
3.A.keep               B.repair                 C.sell                           D.throw
4.A.anxious                  B.lucky                        C.ashamed                    D.generous
5.A.some               B.neither               C.none                         D.no one
6.A.calm               B.upset                         C.delighted                   D.astonished
7.A.no                         B.up                            C.it                       D.that
8.A.learn               B.miss                          C.get                            D.find
9.A.message                 B.advice                C.request               D.description
10.A.uses                     B.loses                         C.has                           D.spends
11.A.doubt                   B.help                          C.trouble               D.answer
12.A.tell                B.see                            C.agree                        D.call
13.A.exact                    B.suitable                     C.early                         D.late
14.A.follow                  B.meet                         C.bring                        D.introduce   
15.A.test               B.obtain                C.admire               D.recognize
16.A.failing           B.meaning                    C.turning               D.happening
17.A.read                     B.placed                C.answered                   D.understood
18.A.forget                   B.show                         C.disagree                    D.admit
19.A.clean                    B.crowded                    C.fast                           D.light
20.A.bargain          B.sale                           C.accident                    D.result