1. Professor Smith and Professor Brown will _____ in giving the class lectures.

A. exchange

B. alter

C. shift

D. alternate

[答案]D

2. Pack the cake in a strong box, or it might get _____ in the post.

A. splashed

B. spilt

C. crushed

D. crashed

[答案]C

[解析]splash溅，泼;split(中间)裂开;crash(向下)猛跌;(飞机)失事。

3. The thief _____ the papers all over the room while he was searching.

A. abandoned

B. vanished

C. scattered

D. deserted

[答案]C.

4. Today, housework has been made much easier by electrical _____.

A. facilities

B. appliances

C. instruments

D. equipment

[答案]B

5. The _____ of the trees in the water was very clear.

A. mirror

B. sight

C. reflection

D. shadow

[答案]C