B. When very hot weather comes.

C. When a strong wind comes.

D. When low air pressure comes.

答案:C

解析:根据"For example, in a scientific report, IQ of a group of students was very high when a very strong wind came, "可知强风来临人们拥有更多智力, 故选C项。

7. What will happen to people in "good weather" of 18℃?

A. People are very forgetful.

B. People can't do their work well.

C. Thin people feel cold.

D. People are in better health.

答案:D

解析:根据"There is a 'good weather' for health. People feel best at a temperature of about 18℃. " 可知18度的时候人们的身体更会健康。故选D项。

8. What does the writer want to tell us?

A. Hot and cold weather influences all people in the same way.

B. Weather influences people's lives.

C. IQ never changes during weather changes.

D. There is a good kind of weather for people's work and health.

答案:B

解析:这篇文章的主题是在讨论"Different weather makes people feel different. ", 并从具体几个方面做出了介绍, 讲天气是如何影响人的健康、智力和感受的, 故选B项。

　　Many people think the dinosaurs were the biggest animals that ever lived. They are wrong. The world's biggest animal is still living and it lives in the ocean. It is called the blue whale. Blue whales can be as long as 30 metres and weigh as much as 1, 000 kilos. The largest dinosaurs weighed only 500 kilos.

　　The whale is not only the world's biggest animal, it is also one of the smartest. We know that whales can communicate with each other, although we do not know what they are saying. Perhaps one day we will learn how to communicate with whales, and then they will be able to tell us about themselves.

　　Although they live in the ocean, whales don't lay eggs like fish do. They are mammals. They give birth to babies and produce milk inside their own bodies to feed them. Humans are also mammals.

There are lots of stories about whales, but perhaps the most famous story is MobyDick, which was written by an American writer named Herman Melville. In the book, a sailor named Captain Ahab spends a lot of time trying to find and kill an enormous white whale named Moby Dick.