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科目： 來(lái)源：不詳 題型：單選題

You can get the best result ______you carry out the experiment under the desired conditions.
A．what ifB．even ifC．only ifD．a(chǎn)s if

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科目： 來(lái)源：不詳 題型：單選題

If you want to live a happy life, you’d better learn to accept life _____it is..
A．a(chǎn)sB．thatC．whichD．where

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科目： 來(lái)源：不詳 題型：單選題

A British official said that_____ this impractical policy could be changed , the future for Britain was indeed dark.
A．unlessB．whenC．ifD．until

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科目： 來(lái)源：不詳 題型：單選題

Usually pilots need about a decade of experience _______ they can be promoted to captain.
A．a(chǎn)fterB．beforeC．thenD．when

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科目： 來(lái)源：不詳 題型：單選題

_______ children get older, they become more and more interested in everything.
A．OnceB．WhetherC．WithD．As

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科目： 來(lái)源：不詳 題型：單選題

You had better book rooms at the hotel in advance       you should find no room on your arrival.
A．so thatB．even ifC．in caseD．now that

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科目： 來(lái)源：不詳 題型：單選題

______ you talk or write a message to someone, you show your language skills to others.
A．Every timeB．Some timeC．At timesD．The time

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科目： 來(lái)源：不詳 題型：單選題

_______ he was 12, Einstein had learned advanced mathematics by himself.
A．As soon asB．At the timeC．By the timeD．During the time

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科目： 來(lái)源：不詳 題型：單選題

Please tell me ______ you are getting on with your new classmates.
A．whetherB．howC．whatD．where

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科目： 來(lái)源：不詳 題型：單選題

The entire hall burst into a great cheer and applause _______ the Nobel Prize winner appeared on the stage accompanied by the chairman.
A．untilB．whileC．by the timeD．the moment

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