31．Those who show respect for others will be respected ________.

　　 A. in response　 B. in return　 C. in turn　 D. in place.

30．Darwin counted 225 flowering plants, ______ he collected and brought home 193.

　　 A. which　 B. for which　 C. in which　 D. of which

29．He came to my class every week, but his attitude _______he was not really interested in the subject.

　　 A. expressed　 B. described　 C. explained　 D. suggested

28．Why didn't you tell me there was no meeting today? I　　　 all the way here through the heavy snow.

　　 A．needn't have driven　　　　　 　　 B．can't have driven

　　 C．mustn't have driven　　　　　　　　 D．shouldn't have driven

27．The old man, _______ abroad　 for twenty years , is on the way back to his motherland.

　 A. to work　 B. working　 C. to have worked　 D. having worked.

26. Zheng He’s first stop during the expedition was in _______ is a part of Vietnam today.

　 A. where　 B. what　 C. which　 D. that

25．People believe that mutual understanding _______ a happy marriage.

　　 A. takes to　 B. makes for　 C. brings down　 D. depends on

24．Lang Ping, who is said to have started her coaching career in Turkey, 　　　volleyball in China for almost twenty years.

　　 A．played　　 　　 B．have played　　 C．was playing 　 D．had played

23．The faces of the four famous American presidents on Mount Rushmore can be seen from a ______ of 60 miles.

A. length　　 B. distance　 C. way　 D. space

22．I’m afraid you can’t _______ to the village in an hour; you must consider the icy road.

A. get it　 B. take it　 C. make it　　 D. leave it