问题 单项选择题

“莫拉克”台风于2009年8月2日下午5时形成于菲律宾东面约1000公里处,随后给菲律宾、中国台湾和中国大陆等地造成了极大的损失。台风的形成过程是:在洋面温度超过26℃以上的热带或副热带海洋上,由于近洋面气温高,大量空气膨胀上升,使近洋面气压降低,外围空气源源不断地对补充流入上升区,受地转偏向力的影响,流入的空气旋转起来,而上升空气膨胀变冷,其中的水汽冷却凝结形成水滴时,要放出热量,又促使低层空气不断上升。这样近洋面气压下降得更低,空气旋转得更加猛烈,从而形成了台风;以下不属于台风产生必要条件的是:

A.广阔的高温、高湿的大气

B.大气低层向中心汇聚、高层向外扩散的扰动

C.水汽冷却凝结形成水滴

D.足够大的地转偏向力作用

答案

参考答案:C

解析:(本题考查气象学知识。与洋面高温高湿相比,水汽冷却凝结形成水滴释放的热量只是辅助条件,不是必要条件。)

单项选择题

Industrial pollution is not only a problem for the countries of Europe and North America but also an extremely serious problem in some developing countries. For these countries, economic growth is a very important aim. They want to introduce industries, and so they put few controls on the industries which cause pollution.

Cubatao, an industrial town of 85 000 people in Brazil, is an example of the connection between industrial development and pollution. In 1954, Cubatao had no industry. Today it has more than twenty large factories, which produce many pollutants. The people of the town are suffering from the poisonous matter in their environment and the bad effects can be clearly seen. Birth shortcomings are extremely common. Among children and adults, lung problems are sometimes twelve times more common in Cubatao than in other places.

It is true that Brazil, like many other countries, has laws against pollution, but these laws are not enforced strictly enough. It is cheaper for companies to take no notice of the laws and pay the fines than to buy the expensive equipment that will reduce the pollution. It is clear, therefore, that economic growth is more important to the government than to the health of the workers. However, the responsibility does not completely lie with the Brazilian government. The example of Cubatao shows that international companies are not acting in a responsible way either. A number of the factories in the town are owned by large companies from France, Italy, and the US. They are doing things in Brazil that they would not be able to do at home. If they caused the same amount of pollution at home, they would be severely punished or even put out of business.

How is the health of the population of Cubatao()

A. There are more heart diseases among people who live near chemical factories.

B. More people suffer from lung diseases because of poisonous matter.

C. Their health is affected by pollutants the same way as that of other Brazilians.

D. Babies there are found not as bright as those who live in other places.

单项选择题 案例分析题