题目内容

【题目】 喜马拉雅山脉南侧印度东北部的乞拉朋齐。地处印度洋暖湿气流的迎风坡,年降水量高达11640毫米,因为拥有极其丰富的降水量被称为“地球雨极”。

据此完成下面小题。

1形成“地球雨极”的主要原因是该地区位于(  )

A. 赤道附近B. 迎风坡C. 内陆地区D. 背风坡

2关于喜马拉雅山脉形成原因的描述正确的是(  )

A. 亚欧板块与太平洋板块相互挤压B. 亚欧板块与印度洋板块相互挤压

C. 亚欧板块与非洲板块张裂断陷D. 亚欧板块与印度洋板块张裂断陷

【答案】

1B

2B

【解析】

1乞拉朋齐位于印度东北部,地处印度洋暖湿气流的迎风坡,而成为世界“雨极”,故选B。

2喜马拉雅山脉位于亚欧板块和印度洋板块的交界处,是两板块不断的碰撞挤压形成的,故选B。

本题组考查的是乞拉朋齐称为雨极和喜马拉雅山形成的原因,理解记忆即可。

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【题目】 Scientists in Britain and the United States have made a new kind of enzyme(酵素)that eats plastics. With its help, plastics can be turned into smaller parts and go away quickly. Scientists believe that, in the future, it could solve the problem of plastic pollution.

The enzyme is able to break down PET, a form of plastic. PET was first made in the 1940s and is now widely used to make plastic bottles. It can remain in the environment for many years and pollute large areas of land and water. So it has always been a headache to deal with the waste from PET and other plastics.

The researchers made the discovery while examining the structure of a natural enzyme in Japan. They found that the natural enzyme was helping to break down PET plastics. So, they decided to make small changes to the enzyme by adding some amino acids(氨基酸). It made the natural enzyme's plasticeating abilities work faster and better.

John McGeehan, one of the lead researchers, said, “We've made an improved enzyme. It's better than the natural one. And we are trying to make more improvements to it.” He went on, “The enzyme is not harmful to humans or animals, and it is friendly to the environment. So we are considering putting it into wider use.”

The team is now trying to make the enzyme break down PET in large quantities(大量地). “We'll_see_that_the_plastic_pollution_may_be_stopped_with_this_technology__However, there is still a long way to go” John McGeehan added.

1完成句子:

With the help of this new enzyme, plastics can be________________ smaller parts and go away quickly.

2完成句子:

PET can pollute large areas of ________________.

3简略回答问题: What did the researchers find according to the passage?

____________________________________________

4找出并写下文章的主题句:

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5将文中画线句子译成汉语:

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