41.Professor Smith seldom _______ the class on time.

A.dismisses B.nervous C.misleads D.regrets

42.Mr. Wang _______ his wife and children when he went to the United States.

A.prescribed B.delayed C.decreased D.deserted

43.He _______ a lot of time in trying to develop the education system in this area.

A. involved B.investigated C.invested D.interfered

44.They spent many years _______ for oil in this small island.

A.exploring B.exploding C.exposing D.exploiting

45.We can’t _______ the fact that we are still a developing country.

A. ignore B.neglect C.imagine D.impress

46.Can you _______ the man who robbed you of your watch?

A. illustrate B.exhibit C.damage D.identify

47.Many children in developing countries can not go to school,because of _______

A.property B.sword C.trace D.poverty

48.What is your _______ to his coming?

A.altitude B.attitude C.attribute D.aspect

49.He _______ into the water and rescued the little girl.

A. inserted B.sloped C.heaped D.dived

50.You may _______ of the extra books in our department library.

A.deposit B.enclose C.fade D.dispose

答案：

1.B 2.C 3.A 4.C 5.B 6.A 7.D 8.A 9.A 10.C 11.D 12.B 13.D 14.C 15.B 16.D 17.A 18.A 19.B 20.A 21.C 22.C 23.D 24.B 25.C 26.C 27.C 28.A 29.A30.B 31.B 32.D 33.D 34.D 35.B 36.A 37.C 38.D 39.C 40.C 41.A 42.D 43.C 44.A 45.A 46.D 47.D 48.B 49.D 50.D