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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A clean environment can help the city bid for the Olympics, which ________ will promote its economic development．

A．in nature

B．in return

C．in turn

D．in fact

题型：未知
难度：未知

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Letterboxes are much more ________ in the UK than in the US, where most people have a mailbox instead．

A．common

B．normal

C．ordinary

D．usual

题型：未知
难度：未知

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I’d appreciate _________ if you would like to teach me how to use the computer．

A．that

B．it

C．this

D．you

题型：未知
难度：未知

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—What’s the name?
— Khulaifi．_______ I spell that for you?

A．Shall

B．Would

C．Can

D．Might

题型：未知
难度：未知

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So difficult it to work out the problem that I decided to ask Tom for advice．

A．I did find

B．I have found

C．did I find

D．have I found

题型：未知
难度：未知

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