Scientistsbelievethatitmightbe

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更新 2022-09-03
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Scientists believe that it might be several years ______ the medicine can be used on human beings.

A．since

B．when

C．before

D．until

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—Some Chinese students find it difficult to understand native speakers when in London.
—Exactly, ______ they’ve learned a lot about grammar and known many words.

A．if only	B．now that
C．even if	D．as if

题型：未知
难度：未知

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Hearing the news, he rushed out, ______ the book ______ on the table and disappeared into the distance.

A．left; lain open	B．leaving; lying open
C．leaving; lie opened	D．left; lay opened

题型：未知
难度：未知

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“Mike is often absent from class.” “Tell him he __ answer for it if he goes on behaving like that.”

A．shall	B．will
C．would	D．can

题型：未知
难度：未知

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When he realized the police had seen him, the man ______ the exit as quickly as possible.

A．made off	B．made for
C．made out	D．made up

题型：未知
难度：未知

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“When he _____ is not known yet.” “But when he ____, he will be warmly welcomed.”

A．comes, comes	B．will come, will come
C．comes, will come	D．will come, comes

题型：未知
难度：未知

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