Wind power is an ancient source of energy_______ we may return in the near future.

试卷相关题目

• 1American is an ________ country. You can hear _______ every where.

  A.English-spoken ; English speaking

  B.English-speaking ; English spoken

  C.speaking English ; English spoken

  D.spoken-English ; English speaking

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• 2Looking out of the window of my room, ___ a tall tree in the yard.

  A.there was

  B.there were

  C.I saw

  D.there stood

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• 3All flights _______ because of the storm, they had to wait in the hall.

  A.have put off

  B.were put off

  C.have been put off

  D.having been put off

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• 4Finding information in today's world is easy．The_______is how you can tell if the information you get is useful or not。

  A.ability

  B.competition

  C.challenge

  D.knowledge

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• 5It was wrong of you to _______ from all your friends who helped you when you were in trouble．

  A.break away

  B.break down

  C.break into

  D.break out

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