三. 阅读理解(共15小题.每小题2分.共30分)阅读下列短文. 从每题所给的四个选项中.选出最佳答案. Trees are useful to man in

三. 阅读理解（共15小题，每小题2分，共30分）阅读下列短文，

从每题所给的四个选项中，选出最佳答案.

Trees are useful to man in three importantways: they give him wood and other useful things, they give him cool places,and they help to stop drought and flood.Unluckily, in many parts of the world,man has not found that the third of these points is the most important. Manwants to make money from trees, so he has cut them down in large numbers, onlyto find that without them he has lost the best friends he had. And also, he isusually too careless to plant and look after new trees. So the forests slowlydisappear. This does not only mean that man will have fewer trees.

The results are even worse: for where thereare trees, their roots break up soil-make the rain in-and also bind the soil,thus stopping it from being washed away easily; but where there are no trees,the rain falls on hard ground and flows away, causing floods and carrying awaythe rich top-soil. When all the top-soil is gone, nothing is left but uselessdesert.

1.The most important points of trees to manis ________.

A. they help him to make money

B. they give him cool

C. they help him to stop drought and flood

D. they give him wood and other things

2.In many places forests slowly disappearbecause ________ .

A. many trees have been cut down by man

B. new trees are not well looked after

C. man has not paid enough attention toplanting trees

D. all the above

3.Land becomes desert after all trees arecut down because ________ .

A. roots of trees break up the soil

B. there are too many rainfalls

C. strong winds bring a lot of sand

D. there are no longer trees to keep therain and protect the top-soil.

4.Which title best fits the passage?

A. Trees and Man

B. The Function of Tree Wood

C. How do People do with Trees?

D. The Usage of Tree Roots

试题答案

【答案】

 C

 D

 D

 A

【解析】