4. What can be inferred from the last paragraph of the passage？

A. "Sun-cure" schools are becoming popular everywhere.

B. Switzerland is the only country where "sun-cure" schools are popular.

C. Proper conditions are necessary for the running of a "sun-cure" school.

D. "Sun-cure" schools are found in countries where there is a lot of sunshine.

[答案解析]

本文介绍了利用日光治病的历史与发展。

3. Dr Roller set up a "sun-cure" school probably for the reason that _______.

A. most children could stay in his hospital

B. children could study while being treated

C. the school was expected to be full of pupils

D. the school was high up in the mountains

2. Why are a Danish doctor and a Swiss doctor mentioned in the second and third paragraphs？

A. Because they both made use of sunlight to treat illness.

B. Because they were the first people who used sunlight for treatment.

C. Because they were both famous European doctors.

D. Because they used sunlight in very different ways.

1. According to the passage, when did sunlight begin to play a more important part in the treatment of disease？

A. From ancient times.　　

B. At the end of the nineteenth century.

C. Not until this century.　

D. Only very recently.

4. D。推断题。从短文中可以看出来作者写这篇文章只不过陈述事实而已。

3. A。推断题。根据When it is separated, a strange thing happens; the rock breaks down into fine, soft, soapy fibres(纤维)及 Scientists do not know why the rock can be separated easily into thread 可以断定答案为A。

2. D。细节题。根据 After putting on a pair of asbestos gloves, …took red-hot coals from the fireplace and played with them in his hands 可推知，他是用当场演示的方法来推销他的产品的。故答案为D。

1. C。主旨题。短文主要介绍了石棉的神奇作用。故C最佳。

4. The author’s main purpose in writing this passage was to _______.

A. show the need for more scientists

B. compare asbestos with other minerals

C. increase the sales of asbestos

D. present facts about asbestos

[答案解析]

本文讲述了耐火材料石棉在北美的开采过程及它的神奇耐火作用。

3. Which is the most important character of asbestos that the author wants to show us?

A. It is like thread.　　　　　　　 B. It feels soapy.

C. It burns easily.　　　　　　　　 D. It is unusually heavy.