A crow(乌鸦) is about twenty inches(英寸) long and black all over. Crows are dirty birds becau

A crow(乌鸦) is about twenty inches(英寸) long and black all over. Crows are dirty birds because they live on bad food. Crows eat a lot of waste food. In this way they are more useful to us than any birds. They clean up the dirty things in our streets. Crows are always hungry. They look for food all day, and in the evening you can see them in large numbers flying back to their nests(巢) in the trees. They sleep there at night.
Crows are much noisier than other birds. Very often a large number of crows will get together on one house and talk. Sometimes they talk together, and sometimes they do it by turns(轮流) like human beings(人类). It is easy to tell(判断) from crow’s sound if they are pleased or angry. Perhaps crows talk a lot because they are friendly birds. A pair of crows will live together all their lives, and if one of them dies, the other one becomes very sad and quiet for the rest of its life and some time later it dies too.
【小题1】Crows “live on bad food” means “ ”.A．Crows eat old bad food.B．Old bad food is crows’ nests.C．Crows make their nests on old bad food.D．Crows sleep on old bad food.【小题2】Crows are more useful to us because they .A．are clean birdsB．can move away waste foodC．can make our streets cleanD．aren’t dirty【小题3】Crows always look for food .A．in the eveningB．all dayC．in the morningD．at night【小题4】People can’t hear crow talk .A．togetherB．by turnsC．noisilyD．quietly【小题5】If a pair of crows loves each other, A．they will not live together.B．neither of them can live alone happily.C．they will dieD．one of them will dieA

(答案→)A 解析：这篇短文中作者主要介绍了乌鸦的食物种类，生活习性及对我们人类的贡献等内容。【小题1】词义猜测题。根据短文第一段 Crows are dirty birds because they live on bad food.及Crows eat a lot of waste food.可知，乌鸦主要以脏的食物为主食；故选A。【小题2】细节理解题。根据短文第一段They clean up the dirty things in our streets. 可知，乌鸦对我们的好处就是能够清理大街上的废物；故选B。【小题3】细节理解题。根据短文第一段They look for food all day可知答案为B。【小题4】细节理解题。根据短文第二段Crows are much noisier than other birds. Very often a large number of crows will get together on one house and talk. 可知，乌鸦通常是一种比较吵闹的一种动物，所以一般他们不会很安静；故选D。【小题5】细节理解题。根据短文第二段A pair of crows will live together all their lives, and if one of them dies, the other one becomes very sad and quiet for the rest of its life and some time later it dies too.可知，两只相爱的乌鸦会永远在一起的；有一个离去另一个是不会开心的；故选B。

对的，就是这个意思