新概念英语第四册第二课,新概念英语第四册第7课练习题及答案

副标题:新概念英语第四册第7课练习题及答案

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新概念英语第4册课后习题答案:
  Unit 7 DCABA BACDA AC
  新概念英语第4册课后习题:
  Multiple choice questions 多项选择题
  Choose the correct answers to the following questions.
  Comprehension 理解
  1 What happens if you shout on a mountainside?
  a.You will be able to measure distance.
  b.Nothing.
  c.It will take a long time for an echo to come back.
  d.You will hear an echo.
  2 You can measure the depth of the sea by ____.
  a.shouting so you get back an echo
  b.tapping on the hull of a ship
  c.working out how long it takes to get an echo from the sea bottom
  d.calculating the reflection
  3 The echo-location principle means you can even ____.
  a.locate and distinguish different species of fish
  b.hear a fish's echo
  c.improve the apparatus now in use
  d.easily catch different species of fish
  4 Bats use echo-location to ____.
  a.see where they're going
  b.avoid bumping into things
  c.avoid flying insects
  d.emit squeaks
  Structure 句型
  5 Not ____sound made by animals serves aslanguage.(l.1)
  a.every
  b.each
  c.the whole
  d.the entire
  6 We have only to turn to that extraordinarydiscovery of echo-location in bats to see a case____the voice plays a strictly utilitarian role.(11.1-2)
  a.which
  b.where
  c.when
  d.why
  7 ____ he shout in the vicinity of a wall, an echo will come back.(1.4)
  a.Should
  b.If
  c.When
  d.Though
  8 ____ the echo-sounding apparatus was born.(11.7-8)
  a.Such
  b.The way
  c.That's how
  d.Like this
  Vocabulary 词汇
  9 The voice plays a strictly ____ role.(1.2)
  a.secondary
  b.important
  c.usual
  d.practical
  10 A sound made by ____ the hull of a ship - (11.5-6)
  a.hitting
  b.knocking
  c.beating
  d.bashing
  11 The sound varies ____the size and nature of the object.(11.8-9)
  a.depending on
  b.relating to
  c.influencing
  d.by
  12 A ____ of fish will do this.(1.9)
  a.class
  b.herd
  c.school
  d.flock

新概念英语第四册第7课练习题及答案.doc

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