22. A. children　　　　　　　　　　 B. teachers　　　　　　　　　　 C. parents　　　　　　　　　　 D. students

[答案] C

21. A. average　　　　　　　 B. excellent　　　　　　　　　 C. open-minded　　　　　　 D. absent-minded

[答案] A

65. __________ most of the earth’s surface is covered by water, fresh water is very rare and precious.　

( 06上海春季 )A. As　　　 　　　　　　　　　 B. Once 　　　　　　　 　C. If 　　　　　　　　　　　 D. Although

64. In time of serious accidents，_________　we know some basic things about first aid, we can save lives.　 ( 06重庆 )A. whether　　　　　　　　 B. until　　　　　　　　 　 C. if　　　　　 　 　 　 D. unless

63. If you are traveling 　　　　the customs are really foreign to your own, please do as the Romans do.　

( 06天津 )A. in which　 　　　B. what　　　 　　　　 C. when 　　　　　 D. where

62. The cost of living in Glasgow is among the lowest in Britain, 　　　　the quality of life is probably one of the highest.　 ( 06天津 )

A. since　 　　　　B. when　 　　　　C. as 　　　　　　　D. while

61. --- Why didn’t you tell him about the meeting?--- He rushed out of the room　_____　I could say a word.　

( 06四川 )　A. before　　　　　 B. until　　　　 　　C. when　　　　　 　D. after

60. --- Mom, what did your doctor say?　 --- He advised me to live____　 the air is fresher.　 ( 06四川 ) 　　A. in where　　　　 　　 B. in which　　 　 C. the place where　　 D. where