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科目： 來源：不詳 題型：單選題


Although the causes of cancer ____we do not yet have any practical way to prevent it.
A．a(chǎn)re being uncoveredB．have been uncovering
C．a(chǎn)re uncoveringD．have uncovered

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科目： 來源：不詳 題型：單選題


5.―Have you handed in your schoolwork yet?
　―Yes，I have. I guess it ____ now.
A．has gradedB．is gradedC．is being gradedD．is grading

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科目： 來源：不詳 題型：單選題


一Have you handed in your schoolwork yet?
一Yes,I have.I guess it _____ now.
A．has gradedB．is graded
C．is being gradedD．is grading

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科目： 來源：不詳 題型：單選題


Since 1 won the big prize，my telephone hasn’t stopped ringing. People____to ask how I am going to spend the money.
A．phoneB．will phone
C．were phoningD．a(chǎn)re phoning

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科目： 來源：不詳 題型：單選題

let’s go out now. It _____ any more.
A．didn’t rainB．doesn’t rainC．won’t rainD．isn’t raining

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科目： 來源：不詳 題型：單選題

— ________ for the glass! —It’s OK. I’m wearing shoes.
A．Look outB．Walk out
C．Go outD．get out

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科目： 來源：不詳 題型：單選題

We’re going to ________ with some friends for a picnic. Would you like to join us?
A．get inB．get over
C．get alongD．get together

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科目： 來源：不詳 題型：單選題

They say the snow will ________ until the end of next week.
A．keepB．last
C．startD．stay

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科目： 來源：不詳 題型：單選題

A red sky in the morning _____ to be a sign of bad weather.
A．saysB．is saying
C．has saidD．is said

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科目： 來源：不詳 題型：單選題

New medicines and instruments ______ every day to extend life.
A．developB．a(chǎn)re being developed
C．a(chǎn)re developingD．have developed

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