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科目： 來源：不詳 題型：單選題

___________you try to do something beyond what you have already mastered, you will never grow.
A．SinceB．WhenC．ThoughD．Unless

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科目： 來源：不詳 題型：單選題

I have been advised to arrange for insurance _________ I need medical treatment.
A．so thatB．unlessC．in caseD．though

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科目： 來源：不詳 題型：單選題

Before long the Greens moved to a bigger city ____ the children could attend a better high school.
A．even ifB．so thatC．now thatD．a(chǎn)s if

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科目： 來源：不詳 題型：單選題

--With the country’s pension fund gap becoming wider than ever, retirement age should be postponed immediately.
---Easier said than done.          we take all factors into account, we shall be faced with some other social problems.
A．UnlessB．UntilC．WhenD．Once

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科目： 來源：不詳 題型：單選題

______the boy has already corrected his mistake, we should not punish him any more.
A．SinceB．UntilC．UnlessD．Although

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科目： 來源：不詳 題型：單選題

It is already well understood        causes the global warming.
A．whatB．whenC．thatD．how

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科目： 來源：不詳 題型：單選題

      she was out of the room, he took a quick look at the papers on her desk.
A．IfB．WhileC．ThoughD．Unless

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科目： 來源：不詳 題型：單選題

Don’t litter in the street in Singapore,        you could be arrested.
A．orB．a(chǎn)ndC．butD．so

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科目： 來源：不詳 題型：單選題

The so-called Asia—Pacific century will make no sense_____ China develops．
A．unlessB．whenC．ifD．a(chǎn)s

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科目： 來源：不詳 題型：單選題

How can they expect to learn anything ________they never listen?
A．whileB．unlessC．lestD．when

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