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科目： 來(lái)源：不詳 題型：單選題


This old computer must have been of great use to _______ did the scientific research.
A．thoseB．whenC．whoeverD．whomever

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--- I rang you at about ten, but there was no reply.
--- Oh, that was probably ____ I was seeing the doctor.
A．whenB．whyC．whatD．that

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科目： 來(lái)源：不詳 題型：單選題


Maria has to baby-sit. That’s______ she can't come with us.
A．whyB．hoC．whenD．what

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科目： 來(lái)源：不詳 題型：單選題


____ surprised me most was ______ they had finished it so quickly.
A．What, whatB．That, thatC．What, thatD．That, what

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科目： 來(lái)源：不詳 題型：單選題


The reason why she couldn’t come to the meeting was_____ she had not been invited.
A．becauseB．whichC．thatD．why

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Put yourself in situations where you're forced to communicate in English, ______ you'll see more progress over time．
A．until B．orC．butD．a(chǎn)nd

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27．It was the President himself______ opened the door．
A．who B．whenC．whichD．where

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科目： 來(lái)源：不詳 題型：單選題


The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．
A．whichB．thatC．whereD．what

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科目： 來(lái)源：不詳 題型：單選題


_________ the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．
A．HowB．BecauseC．IfD．While

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科目： 來(lái)源：不詳 題型：單選題


Beijing took steps to limit the kinds of high-risk of borrowing money from the banks that can create the high price of housing, ______ happened in the United States．
a．a(chǎn)s                 B．that               C．how      D．while

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