单选：（共 40 小题，每小题 1 分，满分 40 分）1. It was 1969 _ the American astronauts succeeded in landing on the moon.A. that B. when C. on which D. which2. The students ages _ 15 to 18.A. range B. ranged C. range from D. ranges from3. _, well go camping.A. Weather permits B. If weather will permitC. Weather permitting D. Weather permitted4. _, we would have not finished the work on time.A. If you didnt help us B. Without your helpC. If you havent helped up D. If you wouldnt help us5. You can go out _ you promise to be back before 11 oclock. A. as far as B. so far as C. even if D. as / so long as6. The view _ many scientists hold is _ too much emission of carbon dioxide is destructive.Awhich；which Bthat；that Cthat；which Dwhat；that7. I _ this man with receiving stolen goods.Aaccused Bscolded Ccharged Dblamed8. What we did resulted _ failure, _ I think Im also responsible.Ain；to which Bfrom ； for which Cin ；for which Dfrom；to which9. China should become a global leader in energy efficiency by 2050 _ nuclear power is likely to account for at least half of the countrys energy.Aon which Bthat Cwhen Dfor which10. -The project has been held up by a sudden change in temperature for a week.-Im afraid the terrible weather will _ for some time.Akeep back Bkeep up Ckeep out Dkeep on11. Few people know the fact _ was not until 1936 that basketball became a regular part of the Olympic Games.Ait that Bthat it Cthat Dit12. -Ill never understand how it _ that he still insisted on going there alone after being told about the possible danger.-Dont worry. He just likes taking adventure.Acame about Bcame across Ccame out Dcame up13. There are many things that I cant _ going abroad, of which is the ignorance of the locals.Akeep up with Bcome up with Cput up with Dcatch up with14. I hope you can study hard and master as much knowledge as possible; otherwise youll have to live a hard life _.Anow and then Bat the moment Cin a word Das a consequence15. He being a child of _ intelligence，expecting too much of him will make him nervous.Aaverage Bslight Cstrange Ddifferent16. -She couldnt have done that sort of thing.-Whatever she did was reasonable, _ to what you did. Besides, its none of your business. Get down to _ your lessons.Acomparing; doing Bcomparing; do Ccompared; doing Dcompared; do17. -How about visiting International Horticultural EXPO 2011 in Xian this weekend?-_. I dont mind.A. By all means B. I am sorry. I will be busy this weekendC. It is up to you D. Im not sure. I have to check my schedule18. -Shall I turn on the TV, Mom?-No. You should be quiet _ wake up your sleeping brother.A. so not as to B. so as not to C. so as to not D. not so as to19. The maths teacher demanded that all the students _ the examination paper within one and a half hours.A. finish B. finished C. would finish D. could finish20. Not only _ great thoughts but also they express their thoughts in words which powerfully influence our minds and emotions.A. did great writers have B. great writers had C. great writers have D. do great writers have21. The man received a ticket for speeding. He _ have driven so fast.A. cant B. wouldnt C. shouldnt D. mustnt22. He is a student at Oxford University, _ for a degree in computer science.A. studied B. studying C. being studied D. to study23. Shoppers fled the street in _ after two bombs exploded in the central part of the city.A. danger B. surprise C. trouble D. panic24. -The tower we had visited 3 months before was burnt to the ground last night.-_ What on earth were the firemen doing then?A. How come? B. Absolutely! C. Anything wrong? D. Im frightened.25. The candidate was about to get in the car _ suddenly a man with a mask appeared and shot at him. A. while B. after C. as D. when26. -Peter, lets check what we still have left.-Well, it is no use _ the total loss before the typhoon leaves. A. evaluating B. to evaluate C. evaluate D. having evaluated27. The man was busy preparing lunch in the kitchen, his wife _ comfortably in the sofa watching TV.A. to seat B. seating C. seated D. was seated28. Food safety _ to customers, which should be the minimum requirement for the food industry. A. guarantees B. is guaranteed C. is guaranteeing D. guaranteed29. -What a mess! What are you doing?-Im _ the drawer looking for the sweater. A. going through B. glancing through C. breaking through D. getting through30. Waving to her family on the platform, _.A. sorrow filled the girls mind B. the girl could not hold back tears of sorrowC. the parents watched the train leaving slowly D. the train began to move slowly31. Five minutes early, _ we could have caught the last train.