Directions：In this section, there are 10 incomplete sentences.For each sentence there are 4 choices marked A、B、C and D.Choose the one that best completes the sentence.Then mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.
21、By a strange________，both candidates have come up with the same solution to the problem.
22、The discussion was so prolonged and exhausting that______the speakers stopped for refreshments.
A.at large B.at intervals
C.at ease D.at random
23、Mr Tunick filed suit against the New York police department after city officials________his request.
A.turned down B.turned in
C.turned off D.turned out
24、The fireman had a ________ escape when a staircase collapsed beneath his feet.
25、Many painters，rock singers，and street dancers have distinct hair style，________to their group.
26、That he brought the company big profits wouldn’t _______ putting the company’s money into his own pockets.
27、We’re _______ 50 new staff this year as business grows.
A.taking over B.taking in
C.taking on D.taking up
28、Is the theory of evolution in direct _______ with religious teachings，or does it leave room for debate?
29、Libraries are an investment for the future and should not be allowed to fall into
30、A transplant operation is successful only if doctors can prevent the body from rejecting the_______organ.