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He _____the problem _____in his mind for a whole week before he did anything about it.

A. switched; on        B. kicked; up       C. turned; over         D. took; on

C


解析:

句意:在采取措施之前,他在脑中将这个问题反复思考了一个星期。turn over :to think about carefully仔细考虑;switch on把开关打开;kick up引起;take on呈现、雇用、承担。

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Researchers at the University of Bedforshire have developed a new technique for powering electronic device(装置). The system, developed by Professor Ben Allen at the Centre for Wireless Research, uses radio(无线电) waves as power.
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  1. 1.

    From the text we know the new technique for powering electronic devices_____.

    1. A.
      can be applied to all electronic devices.
    2. B.
      uses radio waves to create power.
    3. C.
      has replaced conventional batteries.
    4. D.
      produces many toxic chemicals.
  2. 2.

    According to Professor Allen, power harvesting technology______.

    1. A.
      makes every use of radio waves.
    2. B.
      takes power from usual sources.
    3. C.
      reduces our dependency on conventional batteries.
    4. D.
      aims at huge commercial benefits.
  3. 3.

    What can we learn about Professor Allen and his team from the text?

    1. A.
      They have made use of radio waves in their daily life.
    2. B.
      They have raised a big fund to support their research.
    3. C.
      They have gained a patent for their new technology.
    4. D.
      They mainly did their research in their spare time.
  4. 4.

    What is Professor Carsten Maple’s attitude toward the new technique?

    1. A.
      Critical.
    2. B.
      Favorable.
    3. C.
      Conservative.
    4. D.
      Negative.
  5. 5.

    What is the text mainly about?

    1. A.
      A new technique to create power.
    2. B.
      A crisis concerning conventional batteries.
    3. C.
      Some special sources of power.
    4. D.
      The development of power harvesting.

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