80. _______ of the surface(表面) of the earth is　covered with water.

　　 A. First third　　 　B. Two thirds　　 C. One three　　 D. Two three

79. Most of the stars are much more bigger than the sun. But they are ______ light years away from us.

　　 A. thousand　　 　 B. thousands　　　　　 C. thousand of　　 D. thousands of

78. The game of _______ Olympics will be held in Beijing in 2008.

　　 A. 29　 　B. the 29th　 C. the 29　 D. 29th

77. There are _______ seasons in a year in our country.

　　 A. two　 　B. four　 C. second　 D. fourth

76. Tuesday is the _______ day of a week in English.

　 　A. first　 　B. fifth　 C. third　 D. fourth

50. the street is ________ wide.

A. two meters　 B. two meter　 C. the two meter　 D. a two meter

数词专项练习(二)

49. There are ________ stars in the sky.

A. million of　 B. millions of　 C. the million　 D. a million of

48. I’m so tired after ________ walk.

A. three hours　 B. three hours’　 C. three hour’s　 D. three hour

47. It took me ________ to find out the key to the drawer.

　　　 A. one and half hours　 　　　　 B. one and a half hours　

　　　 C. one and a half hour　 　　　　 D. one and half hour

46. There will be a comedy on TV at ________ this evening.

A. seven past thirty　 B. half past seven C. seven the thirty　 D. thirty to seven