April 22 is Earth Day. Everyone on Earth should care about and protect the earth!
The earth has warmed by about 1°F (華氏度) over the past 100 years, but why and how?
Well, scientists are not quite sure. Maybe the earth gets warmer and warmer on its own. But many scientists say that people are doing many things which makes the earth warmer.
First, greenhouse effect (溫室效應(yīng)) is a very important reason for the change of the earth. People give out too much energy into the air every year. It makes the earth warmer. Climate (氣候) change is another important reason. Sometimes it becomes too hot and sometimes too cold. Sometimes there is too much rain and sometimes too little. The change of the climate makes the earth warmer. In turn, the warmth of the earth changes the climate, too.
When the earth becomes warmer, there may be more rain and a rise in sea level. It will affect the growth of plants, animals and people. On a Pacific island, 100 people have to move to higher ground because the sea is rising. These people can no longer live on the coast. Before that, two islands without people went underwater in 1999. Scientists say that the seas can rise by nearly one metre by 2100.
People can affect the earth's air, land and water. As for us, we can do many things to protect the earth. For example, we can use fridges less. We can tell more people about protecting the earth.
小題1:Earth Day is probably set for people to ______.
A．learn more about the earthB．make full use of the earth
C．take better care of the earth.D．study the warmth of the earth
小題2:We can infer (推斷) from the passage that the reasons for the warmer earth are
______ now.
A．not very clear B．completely secretC．well knownD．not given yet
小題3:Greenhouse effect comes from______.
A．sea risingB．climate changeC．nature's unbalanceD．people's activity
小題4:The passage mainly tells us that ______.
A．there is more rain nowB．we should protect the earth
C．we must stop pollutionD．sea level is getting higher

小題1:C
小題2:A
小題3:D
小題4:B

試題分析：這篇短文中作者主要分析了地球變暖的原因，并號召我們行動起來保護(hù)地球。
小題1:根據(jù)April 22 is Earth Day. Everyone on Earth should care about and protect the earth!描述，可知選C。
小題2:根據(jù)Well, scientists are not quite sure. Maybe the earth gets warmer and warmer on its own. 描述，可知地球變暖的原因還不太清楚，故選A。
小題3:根據(jù)People give out too much energy into the air every year. It makes the earth warmer.描述，可知溫室效應(yīng)來自于人類的活動，故選D。
小題4:這篇短文中主要分析了地球變暖的原因，告訴我們應(yīng)該保護(hù)地球。故選B。
點評：本文淺顯易懂，各個小題都能在文中找到適當(dāng)依據(jù)。只要認(rèn)真閱讀短文，注意前后聯(lián)系，就能順利完成閱讀。文章所設(shè)試題主要考察細(xì)節(jié)查找，做題關(guān)鍵是找出原文的根據(jù)，認(rèn)真核查小題和原文的異同。
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The earth is our home and we must take good care of it. That is to say we must   1   the land, air and water clean. But man    2  a lot of pollution on earth since he first made fire, washed his clothes in the river and threw rubbish on the ground. Many years ago, pollution was not so serious   3    there were not so many people.
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