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科目: 來(lái)源:不詳 題型:單選題

Do you know that a living cell can be       for a thousand years if the temperature is right?
A.sparedB.protectedC.preservedD.developed.

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科目: 來(lái)源:不詳 題型:單選題

He is amazingly cheerful considering all that he has      .
A.looked throughB.gone through
C.broken throughD.seen through

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科目: 來(lái)源:不詳 題型:單選題

Though having lived abroad for years,many Chinese still________the traditional customs.
A.perform   B.possessC.observe   D.support

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科目: 來(lái)源:不詳 題型:單選題

The teacher always waits until all the children ______ before he starts the lesson.
A.get downB.set downC.put downD.settle down

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科目: 來(lái)源:不詳 題型:單選題

Children who ______ well will be given a red flower and an apple as encouragement.
A.behaveB.proveC.showD.look

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科目: 來(lái)源:不詳 題型:單選題

While looking for a book, I ______ this old photo taken in college.
A.came intoB.came acrossC.came upD.came out

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科目: 來(lái)源:不詳 題型:單選題

Although we have only met ______, I find we have a lot in common.
A.from time to timeB.in time
C.by chanceD.over and over again

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科目: 來(lái)源:不詳 題型:單選題

I have always regretted ______ harder at school.
A.not to study B.to not study
C.having not studiedD.not having studied

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科目: 來(lái)源:不詳 題型:單選題

We have ______ the get-together until next weekend when we won’t be so busy.
A.set offB.put off C.take offD.set up

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