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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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When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.

A．that

B．it

C．this

D．what

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相关试题

（2013·安徽卷) This project requires close teamwork. will be achieved unless we work well together.

A．Nothing

B．Anything

C．Something

D．Everything

题型：未知
难度：未知

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（2013·重庆卷)Recycling is one way to protect the environment; reusing is ______.

A．another

B．the other

C．one another

D．one

题型：未知
难度：未知

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（2013·辽宁卷)To her joy,Della earned first the trust of her students and of her collegues.

A．that

B．one

C．ones

D．those

题型：未知
难度：未知

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At our factory there are a few machines similar to _______ described in this magazine.

A．them

B．these

C．those

D．ones

题型：未知
难度：未知

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The traffic on the main streets has a longer green signal than _______ on the small ones.

A．one

B．this

C．that

D．it

题型：未知
难度：未知

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