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[单选题]

Scientists are working on new fuels to find（)that burns more cleanly than gas.

A.everything

B.one

C.anything

D.some

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更多“Scientists are working on new …”相关的问题

第1题

()what many scientists seem to think, measurements and calculations are not the only w

（)what many scientists seem to think, measurements and calculations are not the only w

ay to discover truth.

A.ln case of

B.Regardless of

C.ln the event of

D.Despite of

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第2题

The scientists have（)to the government to take actions against pollution.

A.announced

B.appeared

C.appealed

D.approached

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第3题

The scientists are trying to unveil the history of the universe.（翻译）

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第4题

Scientists often classify materials by their（): solid, liquid, or gas

A.state

B.volume

C.shape

D.purpose

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第5题

The study of thousands of samples from the sea occupied scientists for years and led

A.versions

B.volumes

C.editions

D.issues

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第6题

As can be probably perceived, a manned trip to Mars may soon ________ since scientists

A.comment

B.commence

C.command

D.commute

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第7题

With lasers scientists can explore many physical processes once （) our understanding.

A.for

B.beyond

C.within

D.by

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第8题

With the population explosion, scientists will have to ______new methods of increasing the world’s food supply.

A.stick to

B.come up with

C.carry out

D.lead to

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第9题

The scientists（）when the spacecraft would reach the moon.

A.challenged

B.classified

C.commented

D.calculated

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第10题

Scientists discovered they could measure wind speed by _______ a wind meter to a kite

A.associating

B.attaching

C.assisting

D.applying

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