Question

根据短文意思，从A~F中为每段选择最佳的标题。

A.How it happened like this:few birds， animals or fish in the lake. B.There are many factories around it. C.Polluted water comes into the lake. D.Lake Ponkapog used to be full of life. E.How to save the lake. F.Oil and gas from boats pollute the lake.

1.     Thirty years ago， Lake Ponkapog 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 filled with strange plants.

2.     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.

3.     Now there are many homes around the lake. People often use chemicals in their gardens. They use other chemicals for cleaning or killing insects. There are many factories using chemicals in their machines. When it rains， the rainwater picks up all the chemicals from homes and factories and then carries them into the lake. They pollute the water and kill the animals.

4.     Boats on the lake are also a problem. Lake Ponkapog is a popular place for motorboats. But oil and gas（汽油）often get into the lake， so more bad chemicals go into the water in this way.

5.     People around the lake love their lake and want to save it. A clean lake must have clean rainwater going into it. Clean rainwater is possible ，only if people are careful about chemicals at home and at work. They must also be more careful about gas and oil and 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.

Answer

1.D

2.A

3.C

4.F

5.E

【解析】

试题分析：这篇短文主要是是介绍了Lake Ponkapog过去充满了活力和生命，现在湖水被污染了，造成这个现象的原因及人们如何去拯救这条湖。

1.D Lake Ponkapog三十前和现在的对照，以前充满了活力，好多鸟和动物生活在这里，现在这里被污染了。可知这里是说Lake Ponkapog used to be full of life.Lake Ponkapog过去充满了生命。故选D。

2.A通读第二段可知是说How it happened like this:few birds， animals or fish in the lake. 这样的事情是怎么发生的，较少的鸟，动物或鱼在湖里。故选A。

3.C通读整个第三段可知，现在湖周围到处是房子，人们使用一些杀虫的化学药品，这里指药品进入湖里杀死了鱼。故选C。

4.F通读整个第四段可知，湖上的轮船也是一个问题，石油和天然气（汽油）经常入湖。造成湖水污染。故选F。

5.通读整个第五段可知，是在说人们如何拯救这条湖，How to save the lake.故选E。

考点：环保类短文阅读。