41.Glass may _______ at high temperature.
A.profit
B.pronounce
C.sting
D.melt
42.Silver _______ electricity far better than other materials.
A.equips
B.strikes
C.cracks
D.conducts
43.Everyone is encouraged to _______ food or clothing for those who suffered a great deal in theflood.
A.attribute
B.distribute
C.contribute
D.drift
44.White teeth are a sharp _______ to black skin.
A.content
B.contract
C.contrast
D.contain
45.Tom is _______ about photography.He spends nearly all his money on it.
A.justice
B.innocent
C.fierce
D.crazy
答案：41.D 42.D 43.C 44.C 45.D