题目内容
根据短文内容及首字母填空
Trees are useful to men in three important ways:they p________ them with wood and other products, they give them shade, and they help to p________ drought (干旱)and floods(水灾).
Unfortunately, in many p________ of the world, men don’t know that the third of these is the most important.In their eagerness(渴望)of making m________ from trees, some people cut trees down in large n________.And besides, they are usually too c________ to plant and look after new trees, so the forests slowly b________ smaller and smaller.
This does not only mean that men will have fewer trees.The results are e________ more serious:for where there are trees, their roots(根)prevent the rain from washing away the soil easily.but where there are no trees, the rain falls on hard ground and flows away, causing f________ and carrying away the rich top-soil(地表土).When all the top-soil is gone, n________ remains(剩下)but desert.
解析:
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1.provide 2.protect 3.parts 4.money 5.numbers 6.careless 7.become 8.even 9.floods 10.nothing |