1.A year later,with the nation 's economy_____Bush’ s approval rating dropped below 40 percent.
A. in power
B.in trouble
C. in hand
D.in part
2.There is the appreciation of the salient historical truth_____the aging of advanced societies has been a sudden change.
A. which
B. what
C.that
D. how
3.Robots differ from automatic machines______after completion of one specific task, they can be reprogrammed by a computer to do another one.
A. in case
B.in that
C.in which
D.in time
4.Basically,these attitudes amount to a belief______leisure can and should be put to good use.
A. which
B.that
C. what
D.how
5.The professor worked for 7 hours at a______.
A. stretch
B. extend
C. expand
D.prolong
6.If an earthquake occurred, some of the one-storey houses _____
A. might be left stand
B. might leave to be standing
C. might be left to stand
D. might be left standing
7.______, he had no time to rest.
A.As he was tired
B. If he was tired
C.Tired as he was
D.Now that he was tired
8.Since we have a focused subject, we should not talk______"
A. at once
B.at hand
C.at intervals
D. at random
9.why do you blame him for his poor judgment on the matter ______he really needs is encouragement?
A. when that
B.since that
C. when what
D.now that
10.The doctors are _______about the guidelines under which they can carry out euthanasia.
A. at a stretch
B.at a loss
C.at random
D. at length
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