Althoughthecausesofcancer,wedo

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更新 2022-09-03
科目英语
题型单选题
难度中等
浏览 1816

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

The rivers will become dirtier and dirtier _______ we take action to protect them.

A．since

B．if

C．until

D．Unless

题型：未知
难度：未知

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--I’m a little hungry, Mum.
--There are some cakes on the plate. You can take _______.

A．it

B．one

C．that

D．This

题型：未知
难度：未知

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--Would you like some tea, please?
--Yes, and I prefer tea _______ some sugar.

A．to

B．for

C．with

D．From

题型：未知
难度：未知

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--The man in a black suit _______ be our youth worker.
-- I’m sure it _____ be him. I saw him in the laboratory building some minutes ago.

A．must; can’t

B．can; mustn’t

C．can; could

D．must; won’t

题型：未知
难度：未知

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To find ___ better job, she decided to learn ___ second foreign language.

A．a; a

B．a; the

C．the; a

D．the; the

题型：未知
难度：未知

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