Unit 4 Making the news Grammar课时作业

Ⅰ.单项填空

1．Wind is now the world's fastest growing________of power.

A．source B．sense

C．result D．root

答案　A

解析　考查名词词义辨析。句意为：风能是现在世界上增长最快的动力来源。source源泉，来源，符合句意。sense感觉；result结果；root根源，根。

2．The U．S. government on Wednesday ________ former Commerce Secretary Gary Locke as ambassador to China，making him the first Chinese­American ever to take the post.

A．accumulated B．reflected

C．distinguished D．appointed

答案　D

解析　句意为：周三美国政府任命前商务部长骆家辉担任驻华大使，使他成为有史以来担任这个职务的第一位华人。accumulate积累；reflect反映；distinguish区分，辨别；appoint任命，委派。appoint sb. as...任命某人为......。故选D。

3．It is widely acknowledged that students should be________ in terms of overall quality.

A．supported B．matched

C．evaluated D．controlled

答案　C

解析　考查动词词义辨析。句意为：人们普遍认为应该从综合素质的角度来评估学生。evaluate评估，评价，符合句意。support支持，赞成；match相配，相称；control控制。

4．Many languages have been ________ to be the toughest to learn.

A．explained B．claimed

C．addressed D．recalled

答案　B

解析　考查动词词义辨析。句意为：很多语言宣称自己是最难学的。claim sb./sth.to be意为"声称某人/某事是......"，符合题意，故选B。

5．Teachers have to constantly update their knowledge in order to maintain their