自测练习（一）1-50

1. Clothes ______ have been worn only a few times have to be put aside because of the change of fashion.

A. which B. what C. if D. /

2. The word "plastic", coming from the Greek word "plastikos" is used to describe something ______ can be easily shaped.

A. and B. what C. which D. that

3. People feel that there should be one true international language ______ everyone would have to learn as a foreign language.

A. where B. what C. which D. in which

4. Computers make it easy for me to reach my friends ______ have e-mail, but I really have some trouble communicating with those ______ fail to enter the e-age.

A. / ... / B. who ... who C. who ... / D. / ... who

5. We should understand the social context ______ a conversation takes place. We need to be aware of who we speak with and when and where and for what purpose.

A. where B. which C. under which D. that

6. The Voice of America began during World