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Scientists who study the climate are still arguing about how fast the earth is warming and how much it will warm, but they do agree that the earth is warming and that it will keep warming if we don’t do anything about it.

Scientists agree that the burning of fossil fuels (化石燃料) like oil and coal cause greenhouse gases to escape into the air and that these gases are causing most of the warming. Another cause is deforestation (cutting down trees) . Trees soak up carbon dioxide, one of the greenhouse gases, from the air.

There are already some changes happening because of global warming. Sea level is rising and some animals are already moving to new homes. It’s already too late to stop global warming completely.

If the warming gets worse, as scientists expect, there may be some kinds of plants and animals that is disappearing because they can’t move to new homes. There may be more storms and floods. Sea level may rise so much that people have to move away from the coasts. Some areas may become too dry for farming.

Global warming is a very difficult problem to fix. People are having a hard time agreeing on what to do about it. For example, everyone agrees that wasting energy is a bad thing to do. But some people think that the federal government (聯(lián)邦政府) should make laws about it, while other people think it should be up to each person or business to decide what to do.

Many states and businesses in the United States are not waiting until the federal government decides what to do. They have already started working on the problem.

1.What are the scientists arguing about in the passage?

A. How fast is the earth warming?                  B. How much will the earth warm?

C. The earth will keep warming if we don’t do anything about it.    D. Both A and B.

2.What does the underlined phrase “soak up” mean?

A.take in            B.grow up           C.take off           D.set up

3.What may be the causes of global warming?

A.The disappearance of plants and animals and the wasting energy.

B.The burning of fossil fuels and storms and floods.

C.The burning of fossil fuels and deforestation.

D.The rising of sea level and deforestation.

4.What is the best title of this passage?

A.The reason for global warming             B.How to stop global warming

C.The changes to the world                 D.The global warming

 

【答案】

1.D

2.A

3.C

4.D

【解析】

試題分析:這篇短文主要介紹了全球變暖的兩個主要原因以及會給人類生活帶來的影響,告訴我們行動起來保護環(huán)境。

1.根據(jù)第一段Scientists who study the climate are still arguing about how fast the earth is warming and how much it will warm,描述,可知選D。

2.聯(lián)系上下文,可知此處指的是,樹木吸收二氧化碳。故選A,吸收。

3.根據(jù)短文第二段Scientists agree that the burning of fossil fuels (化石燃料) like oil and coal cause greenhouse gases to escape into the air and that these gases are causing most of the warming. Another cause is deforestation (cutting down trees) .描述,可知選C。

4.這篇短文主要討論了全球變暖的問題。故選D,全球變暖。

考點:介紹全球變暖問題的議論文閱讀

點評:本文中長句較多,一時很難讀懂句子含義,注意多讀幾遍,不要強求非得理解一詞一句的含義,能把握文章大意就行。然后帶著問題閱讀短文,一般就能順利找出答題依據(jù)。對于不能直接找到根據(jù)的問題注意聯(lián)系上下文,根據(jù)短文中心總結出正確答案。

 

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