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

试卷相关题目

• 1According to the selection, muscle participation in the process of thinking is ________.

  A.deliberate

  B.obvious

  C.not readily apparent

  D.very pronounced

  开始考试点击查看答案
• 2Body 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

  开始考试点击查看答案
• 3Few 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

  开始考试点击查看答案
• 4The process of thinking and that of listening are similar in that ________.

  A.both are mental acts

  B.muscles participate in both processes

  C.both processes are performed by the entire body

  D.we derive equal enjoyment from them

  开始考试点击查看答案
• 5Some psychologists maintain that thinking is ________.

  A.not a mental process

  B.more of a physical process than a mental action

  C.a process that involves our entire bodies

  D.a process that involves the muscles as well as the brain

  开始考试点击查看答案
• 6Practical 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

  开始考试点击查看答案
• 7The British used radio waves because they ________.

  A.were more exact than sound waves

  B.could not be detected

  C.could penetrate fog and clouds

  D.were easier to use than sound waves

  开始考试点击查看答案
• 8Which 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.

  开始考试点击查看答案
• 9The 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

  开始考试点击查看答案
• 10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

  开始考试点击查看答案