Whileotherscientistsarekeeping

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更新 2022-09-03
科目英语
题型单选题
难度较易
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While other scientists are keeping____eye on changes in the H5N1 bird flu strain, the scientists in England are working on vaccines, in case it becomes highly infectious in ____humans.

A．a , /

B．an, /

C．the, an

D．an, the

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相关试题

–The car comes to a sudden stop. What’s wrong?
– The oil has_____.

A．used up

B．run out of

C．to use up

D．run out

题型：未知
难度：未知

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She couldn’t go to the party that day because she_____.

A．hasn’t invited	B．hadn’t invited
C．hasn’t been invited	D．hadn’t been invited

题型：未知
难度：未知

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Every year, the CCTV chooses ten most _____figures among ordinary people, whose actions can move China.

A．traditional

B．historical

C．enthusiastic

D．influential

题型：未知
难度：未知

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The book is written in _____easy English _____beginners can understand.

A．so; that

B．such; that

C．so; as

D．such; as

题型：未知
难度：未知

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I couldn’t help but_____very concerned about his illness when I heard he was in hospital because of heart disease.

A．to feel

B．feel

C．feeling

D．to have felt

题型：未知
难度：未知

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