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科目： 來源：不詳 題型：單選題

_______ you may have， you should gather your courage to face the challenge.
A．However a serious problem B．What a serious problem
C．However serious a problem D．What serious a problem

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科目： 來源：不詳 題型：單選題

A number of high buildings have arisen ______ there was nothing a year ago but ruins.
A．whereB．whenC．beforeD．until

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科目： 來源：不詳 題型：單選題

This problem may lead to more serious ones if ______ unsolved.
A．makingB．remainedC．keepingD．left

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科目： 來源：不詳 題型：單選題

________, as long as I’m with nature, I don’t care.
A．However tough the journey isB．Whatever tough the journey is
C．However the journey is toughD．Whatever the journey is tough

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科目： 來源：不詳 題型：單選題

The view ______ many scientists hold is ______ too much emission of carbon dioxide is destructive.
A．what; thatB．that; which
C．that; thatD．which; which

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科目： 來源：不詳 題型：單選題

Evidence came up ________ specific speech sounds are recognized by babies as young as 6 months old.
A．whatB．whichC．thatD．whose

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科目： 來源：不詳 題型：單選題

I have kept that photo ______ I can see it every day, as it always reminds me of the happy days in New York.
A．whichB．whereC．whetherD．when

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科目： 來源：不詳 題型：單選題

The new secretary is supposed to report to the manager as soon as she ______________.
A．will arriveB．a(chǎn)rrivesC．is arrivingD．is going to arrive

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科目： 來源：不詳 題型：單選題

The experiment shows that proper amounts of exercise, if _____ regularly, can improve our health.
A．being carried outB．carrying out C．carried out D．to carry out

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科目： 來源：不詳 題型：單選題

Modern science has given clear evidence ______ smoking can lead to many diseases.
A. what       B which        C. that     D where

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