1.Tom is _______ about photography. He spends nearly all his money on it.

A. justice

B.innocent

C.fierce

D.crazy

2.Glass may _______ at high temperature.

A. profit

B.pronounce

C.sting

D.melt

3.Silver _______ electricity far better than other materials.

A. equips

B.strikes

C.cracks

D.conducts

4.Everyone is encouraged to _______ food or clothing for those who suffered a great deal in the flood.

A. attribute

B.distribute

C.contribute

D.drift

5.White teeth are a sharp _______ to black skin.

A. content

B.contract

C.contrast

D.contain

【答案】1.D 2.D 3.D 4.C 5.C