. Scientists have to work hard to keep _____ with modern discoveries and develop

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. Scientists have to work hard to keep _____ with modern discoveries and developments.

A．company

B．track

C．touch

D．pace

答案

解析

略

举一反三

We won’t know whether it will be successful. We won’t know whether there will be good _____.

A．ends

B．results

C．effects

D．causes

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It was a great _____ for him to be pleasant to people he didn’t like.

A．attempt

B．trouble

C．power

D．effort

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One _____ needed when making a cake is flour; another is sugar.

A．container

B．ingredient

C．content

D．equivalent

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. In my opinion, you can widen the _____ of these improvements through your active participation.

A．dimension

B．volume

C．magnitude

D．scope

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The boy slipped out of the room and headed for the swimming pool without his parents’ _____.

A．command

B．conviction

C．consent

D．compromise

题型：不详难度：| 查看答案