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