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 the flood.

　　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

　　46.We need help from the other countries.But we do not _______ on others for support.

　　A.engage

　　B.lean

　　C.strip

　　D.multiply

　　47.We will _______ the plan because of the cost.

　　A.council

　　B.journal

　　C.damp

　　D.oppose

　　48.Our train is _______ at Shanghai at seven o'clock this evening.

　　A.due

　　B.crystal

　　C.cushion

　　D.cooperation

　　49.Her voice was _______ in the noise.

　　A.filled

　　B.entertained

　　C.enormous

　　D.drowned

　　50.He is very _______ in his family and never does anything against his wife.

　　A.hence

　　B.possess

　　C.outer

　　D.humble

　　答案

　　1.A 2.C 3.D 4.C 5.A 6.D 7.D 8.D 9.C 10.D 11.A 12.C 13.C 14.A 15.A 16.D 17.A 18.D 19.C 20.C 21.D 22.D 23.D 24.B 25.D 26.D 27.D 28.B 29.A 30.D 31.C 32.A 33.C 34.A 35.D 36.D 37.C 38.C 39.A 40.C 41.D 42.D 43.C 44.C 45.D 46.B 47.D 48.A 49.D 50.D