30．We must take measures to protect endangered wildlife ______ it is too late．

　　　 A．as long as 　　　　 B．when　 　　　　　　　 C．before　 　　　　　　 D．until

29．The students were just about to ______ the question when one of them found the answer．

　　　 A．look for　 　　　　　 B．come out　 　　　　 C．take to　　　　　　　 D．give up

28．-Did Peter fix the computer himself?

　　　 -He _____ because he doesn' t know much about computers．

　　　 A．has it fixed　　　　 B．fixed it 　　　　　　　 C．had it fixed 　　　 D．had fixed it

27．-Did you watch the movie 2012 last night?

　　　 -I had planned to, but it _____ hard all the time．

　　　 A．is snowing　　　　　 B．was snowing 　　 C．has snowed　 　　 D．had snowed

26．______ all the poor in the world enjoy a Happy New Year as we do!

　　　 A．Wish 　　　　　　　　 B．May　 　　　　　　　　 C．Hope 　　　　　　　　 D．Must

25．- How about the book you are reading?

　　　 -Good indeed．It ______ many problems we have come across in our English study．

　　　 A．says 　　　　　　　　 B．talks　　　　　　　　　 C．covers　 　　　　　　 D．refers

24．It is quite obvious that the aging population in China will cause heavy ______ on the whole society in near future．

　　　 A．pressure　　　　　　 B．shame　 　　　　　　 C．reputation　 　　　 D．benefit

23．-The last one ______ cleans the room．

　　　 -Agreed!

　　　 A．arrived 　　　　　　 B．arrives　 　　　　　　 C．arriving 　　　　　　 D．to arrive

22．While ______ peace - keeping is the UN' s main duty, it also has programs for ______ education, better health and business in the world．

　　　 A．the;an 　　　　　　　 B．不填;the　 　　　　 C．不填;an　　　　　　　 D．不填;不填

第一节：单项填空(共15小题，每小题1分，满分15分)

从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。答案涂在答题卡上。

21．- I hear that Mary won the prize of the physics contest．

　　　 -______ She was not interested in it at all．

　　　 A．So what? 　　　　　 B．Why not? 　　　　 C．You're kidding!　 　　　　　　　　　　　　 D．I think so．