Thirty years ago, Lake Ponkapog in Hartwell, New Jersey, was full of life. Many birds and animals lived beside the water, which was full of fish. Now there are few birds, animals, and fish. The lake water is polluted. It is in a colour of dirty brown, and it is filled with strange plants.
How did this happen? First, we must think about how water gets into Lake Ponkapog. When it rains, water comes into the lake from all around. In the past, there were forests all round Lake Ponkapog, so the rainwater was clean.
Now there are many homes around the lake. People often use the chemicals (化學(xué)制品)in their gardens. They use other chemicals inside their houses for cleaning and killing insects. There are also many businesses. Businesses use chemicals in their machines of shops. Other chemicals fall onto the ground from cars or trucks. When it rains, the rainwater picks up all the chemicals from home and businesses and then carries them into the lake . They pollute the water and kill the animals.
Boats on the lake are also a problem. Lake Ponkapog is a popular place for motorboats（汽船）. But oil and gas from boats often get into the lake. So more bad chemicals go into the water this way.
People in Hartwell are worried . They love their lake and want to save it. Will it be possible? A clean lake must have clean rainwater going into it. Clean rainwater is possible only if people are more careful about chemicals at home and at other chemicals on the ground. And they mustn’t use motorboats any more on the lake. All these may change people’s lives. Only then can Lake Ponkapog be a beautiful, clean lake again.
小題1:In the past, the water in Lake Ponkapog was made clean by ________.
A．forestsB．rainC．birdsD．fish
小題2:Chemicals from homes and businesses _________.
A．a(chǎn)re always cleanB．can help the animals
C．a(chǎn)re good for the lake D．get into the rainwater
小題3:Cleaner rainwater will mean _________ .
A．more boats on the lakeB．more dirty things in the lake
C．a(chǎn) cleaner lakeD．a(chǎn) dirty lake
小題4:To save Lake Ponkapog, people need to ________.
A．be more careful about chemicals B．use the water
C．grow fewer plants in the gardens D．use more motorboats on the lake
小題5:The passage is about ________.
A．boats on the Lake PankapogB．why the water is dirty in Lake Ponkapog
C．clean rainwaterD．dirty lakes

小題1:A
小題2:D
小題3:C
小題4:A
小題5:B

試題分析：這篇短文主要講述了美國新澤西州卡本蓬湖的湖水變臟的原因，并提出了適當(dāng)?shù)慕ㄗh。
小題1:根據(jù)第二段In the past, there were forests all round Lake Ponkapog, so the rainwater was clean. 描述，可知選A。
小題2:根據(jù)When it rains, the rainwater picks up all the chemicals from home and businesses and then carries them into the lake 。及上文描述，可知選D。
小題3:根據(jù)When it rains, the rainwater picks up all the chemicals from home and businesses and then carries them into the lake .及下文A clean lake must have clean rainwater going into it.描述，可知更干凈的雨水造就更干凈的湖泊。故選C。
小題4:最后一段Clean rainwater is possible only if people are more careful about chemicals at home and at other chemicals on the ground.描述，可知選A。
小題5:這篇短文主要講述了美國新澤西州卡本蓬湖的湖水變臟的原因。故選B。
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(qiáng)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(jié)出正確答案。
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