19. C 细节理解题。本文第一段介绍新加坡一位医生注意到医院在治疗流行性感冒数目很大的病例, 第二段交代：世界卫生组织将这一消息连同来自香港出现的同类感冒传播的报告同时公布。

22. The Asian flu virus ____.　

A. was a killer

B. was very weak

C. could reproduce very quickly

D. died very fast

[解题导语]本文是关于发现“亚洲流行性感冒”以及研究的过程。

[答案与解析]

21. The Singapore doctor helped the world by ____.　

A. making those with Asian flu well again

B. killing the virus that caused Asian flu

C. finding the sub-group of the virus

D. reporting the outbreak of Geneva

20. London doctors considered ____.　

A. Asian flu as a bad cold

B. there were three main types of influenza

C. it was necessary to test the other groups of virus besides group A

D. the influenza called “Asian flu”a new one

19. The Asian flu mentioned in the passage ____.

A. had something to do with a virus group B

B. was reported to W. H. O in Geneva by a doctor in Hong Kong

C. broke out not only in Singapore but also in Hong Kong

D. was taken from the throats of the patients in a hospital in Singapore

18．A．主旨要义题。全文介绍语言学习的一些好办法，如每天学习不间断，每节课不拉下，积极参与课堂训练，培养好的学习态度等，因此本题选A作为全文的标题。

E

　　　 In 1957 a doctor in Singapore noticed that hospitals were treating an unusual number of influenzalike cases. Influenza is sometimes called “flu”or a “bad cold”. He took samples from the throats of patients in his hospital and was able to find the virus(病毒)of this influenza.

There are three main types of influenza virus. The most important of these are types A and B, each of them having several sub-groups(亚群). At the hospital the doctor recognized that the outbreak was because of a virus group A, but he did not know the sub-group. He reported the outbreak to the World Health Organization in Geneva. W. H. O. published the important news together with reports of the same kind of outbreak in Hong Kong, where about 15%-20% of the population had become ill.

As soon as the London doctors received the package of throat samples, they began to test them. They found that they could reproduce themselves at a very high speed. Continuing their careful tests, the doctor checked the effect of medicine used against all the known sub-groups of type A virus. On this virus, none of them was of any use.

Having separated the virus, the two doctors now made tests on some selected seleceted animals. In a short time the usual signs of the disease appeared. These experiments showed that the new virus spread easily, but that it was not a killer. Scientists, like the general public, called it simply “Asian flu”.

17．B．细节理解题。本文最后一段说，“把完美主义留在门口，允许自己犯错误并从中学到知识”。

16．D．猜词悟义题。从上下文看，下文的“不要把语言学习聚积在周末，每次学习一两个小时”表明该词的含义是D，不间断地每次学一点。

18. What would be the best title for the passage?

　 A. Tips on studying a foreign language.　

B. Advice on how to learn grammar.

　 C. Suggestions for studying vocabulary effectively.　　　

D. How to make yourself comfortable in the classroom.

[解题导语]

本文说明了学习一门语言并不是那么困难，文中作者提出了一些好的建议，看后，你会从中得到一些启发。

[答案与简析]

17. A good learner is one who ________ according to the passage.

　　 A. never permits himself to make mistakes

　　 B. can learn something from the mistakes he makes

　　 C. follows the goals that other persons set for themselves

　　 D. can get to know his classmates and doesn't take his teachers' advice