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科目： 來源：不詳 題型：單選題


.  Three-fourths of the buildings ______.
A．was destroyedB．is destroyedC．were destroyedD．has been destroyed

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科目： 來源：不詳 題型：單選題


. Early to bed and early to rise ______ a man healthy, happy and wise.
A．makingB．to makeC．makeD．Makes

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科目： 來源：不詳 題型：單選題


. Mathematics ______ the language of science.
A．isB．has beenC．a(chǎn)reD．have been

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科目： 來源：不詳 題型：單選題


.  None of them ______ my friends.
A．isB．a(chǎn)reC．wasD．has been

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科目： 來源：不詳 題型：單選題


. Getting to other planets or to the moon _____ many problems.
A．involveB．involvesC．involvingD．to involve

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科目： 來源：不詳 題型：單選題


. In that country, the rich ______ richer, the poor, poorer.
A．becomeB． has becomeC．becomesD．is becoming

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科目： 來源：不詳 題型：單選題


. Not one in one hundred children exposed to the disease ______ likely to develop it.
A．should beB．must beC．isD．a(chǎn)re

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科目： 來源：不詳 題型：單選題


．Mother ______ us stories when we were young .
A．was used to tellB．is used to tellingC．used to tellD． used to telling

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科目： 來源：不詳 題型：單選題


Every possible means ____, but none ____ successful．
A．has tried; has provedB．tried; proves
C．has been tried; provesD．is being tried; is proved

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科目： 來源：不詳 題型：單選題


.More patients  ＿＿　in hospital this year than last year.
A．treatedB．have treatedC．had been treatedD．have been treated

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