Althoughthecausesofcancer,wedo

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更新 2022-09-03
科目英语
题型单选题
难度中等
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挑错有奖

Although the causes of cancer _____, we do not yet have any practical way to prevent it.

A．are being uncovered

B．have been uncovering

C．are uncovering

D．have uncovered

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相关试题

—How long _______ at this job?
　　—Since 1990.

A．were you employed

B．have you been employed

C．had you been employed

D．will you be employed

题型：未知
难度：未知

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—Have you been wasting time on films again?
—_____. I’ve been working and I need a break.

A．No way

B．Not really

C．I don’t agree

D．I couldn’t agree more

题型：未知
难度：未知

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—English has a large vocabulary, hasn’t it?
—Yes. _____ more words and expressions and you will find it easier to read and communicate.

A．Known

B．Knowing

C．To know

D．Know

题型：未知
难度：未知

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You needn’t have apologized for your absence— , it’s hardly your fault.

A．therefore

B．however

C．meanwhile

D．Besides

题型：未知
难度：未知

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Our daughter doesn’t know what to ______ at the university; she can’t make up her mind about her future.

A．take in

B．take over

C．take up

D．take on

题型：未知
难度：未知

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