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They are just college graduates and don’t realize _____ to start and run a company.


  1. A.
    what takes it
  2. B.
    what they take
  3. C.
    what takes him
  4. D.
    what it takes
D
这题考查宾语从句的用法:宾语从句的句型是:It takes sb some time to do sth,这是对some time 提问,用what,宾语从句的语序是陈述句语序 。选 D。
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Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.

“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”

His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.

“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”

Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.

1. Which of the following is true of Jae Kwon?

A. He teaches chemistry at MU. 

B. He developed a chemical battery.

C. He is working on a nuclear energy source.

D. He made a breakthrough in computer engineering.

2. Jae Kwon gave examples in Paragraph 4_________.

A. to show chemical batteries are widely applied.

B. to introduce nuclear batteries can be safely used.

C. to describe a nuclear-powered system.

D. to introduce various energy sources.

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B. test the power of nuclear batteries.

C. decrease the size of nuclear batteries

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A. uses a solid semiconductor       

B. will soon replace the present ones.

C. could be extremely thin          

D. has passed the final test.

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C. newspaper ad               D. science fiction story

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B.to introduce nuclear batteries can be safely used.

C.to describe a nuclear-powered system.

D.to introduce various energy sources.

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第一节 完形填空(共10小题;每小题2分,满分20分)

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