The British used radio waves because they ________.

试卷相关题目

• 1Practical application of this principle resulted in ________.

  A.new electronic instruments for planes

  B.a radio directing and ranging device

  C.new radio sets for RAF bombers

  D.an electronic detecting device

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• 2Sound waves reflected from a hill can be used to estimate the ________.

  A.height of the hill

  B.speed of sound

  C.distance to the hill

  D.intensity of sound

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• 3According to the selection, muscle participation in the process of thinking is ________.

  A.deliberate

  B.obvious

  C.not readily apparent

  D.very pronounced

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• 4Body movements are necessary in order for the listener to ________.

  A.hear the music

  B.appreciate the music

  C.enjoy the music fully

  D.completely understand the music

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• 5Few people are able to listen to familiar music without ________.

  A.moving some part of their body

  B.stopping what they are doing

  C.directing the orchestra playing it

  D.wishing that they could conduct music properly

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• 6Which of the following is NOT stated but implied in the passage、

  A.Light waves could be used in a device similar to radar.

  B.Radar was a practical application of a well-known principle

  C.Radar greatly increased the effectiveness of RAF.

  D.Sound waves are reflected from a hillside under all conditions.

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• 7The author of this selection probably intended to explain ________.

  A.exactly how radar works

  B.why the British used radio waves in their device

  C.how the word “radar” came into being

  D.how radar helped the British win the Battle of Britain

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• 8天快黑了，该回家了。

  A.It’s black, and it is time to go home.

  B.It’s getting dark, and it is the time to go home.

  C.It’s getting dark, and it is time to go home.

  D.It’s dark, and it is time to go hom

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• 9离开房间时请关灯。

  A.Please turn on the lights when leaving the room.

  B.Please turn off the lights when you leaving the room.

  C.Please turn on the lights when to leave the room.

  D.Please turn off the lights when leaving the room.

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• 10听到这个消息，他们立即出发去飞机场。

  A.Hearing the news, they immediately went for the airport.

  B.To hear the news, they immediately left for the airport.

  C.Hearing the news, they immediately left for the airport.

  D.To hear the news, they immediately left at the airport.

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