第一节 单项填空 (共20小题;每小题1分,满分20分)。请将答案根据题号涂到答题卡上。

21. _____ is known to us all is that the 2012 Olympic Games will take place in London.
 
A. It
B. What
C. As
D. Which
22. Scientists are convinced _____ the positive effect of laughter _____ physical and mental health.
 
A. of; at
B. by; in
C. of; on
D. on; at
23. –I am so sorry. If the traffic hadn’t been so heavy, I could have been back on time.
–What a pity! Helen _____ here to visit you.
 
A. is
B. was
C. would be
D. has been
24. Please tell me how the accident _____. I am still in the dark.
 
A. came out
B. came up
C. came to
D. came about
25. Jack is late again. It is _____ of him to keep others waiting.
 
A. normal
B. ordinary
C. common
D. typical
26. –There is still a copy of the book in the library. Will you go and borrow _____?
  –No, I’d rather buy _____ in the bookstore.
 
A. it; one
B. one; one
C. one; it
D. it; it
27. Our gas _____. Hopefully it will last till we get to the nearest station.
 
A. has run out
B. is running out
 
C. has run out of
D. is running out of
28. Accustomed to _____ the steep mountain, he had no difficulty reaching the top.
 
A. having climbed
B. have climbed
 
C. climb
D. climbing
29. I missed the lecture. How I wish I _____ that wonderful lecture!
 
A. attended
B. had attended
 
C. attend
D. have attended
30. Tom offered us a lift when he was leaving the office, but _____ our work, we turned down his offer.
 
A. not finished
B. not having finished
 
C. finished
D. having finished
31. –Did you see the manager yesterday?
–No. Maybe I should have made an _____ with him in advance.
 
A. announcement
B. arrangement
 
C. agreement
D. appointment
32. The manager is satisfied with your project _____, but you need to go a little further.
 
A. on the whole
B. on behalf
C. in common
D. in total
33. Society _____ people with widely different abilities.
 
A. makes up
B. is made up of
 
C. is made of
D. is made from
34. If the weather _____ better, we _____ a picnic. But it rained all day.
 
A. was; could have
B. had been; could have
 
C. had been; could have had
D. were; should have
35. –Could you spare me a minute? I’ve got something to tell you.
  –Ok, _____ you make it short.
 
A. now that
B. if only
C. so long as
D. even if
36. –How about half past seven outside the park?
–That _____ me best.
 
A. fits
B. matches
C. satisfies
D. suits
37. He didn’t make ____ clear when and where the meeting would be held.
 
A. this
B. that
C. it
D. these
38. _____ such a big difference in attitude towards what one eats, there is no doubt that people in the west regard the Chinese food as something special .
 
A. Even though
B. Due to
C. In spite of
D. In exchange for
39. Look at those black clouds and how strong the wind is now! It looks as if it _____ .
 
A. would rain
B. is raining
C. rained
D. is going to rain
40. He got well-prepared for the job interview, for he couldn’t risk ____ the good opportunity.
 
A. to lose
B. losing
C. to be lost
D. being lost

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