新概念4第7课课后习题及答案

2016-10-06 13:31:00来源:网络

  为了方便同学们自学新概念,新东方在线为大家整理了新概念4第7课课后习题及答案,希望以下内容能够为大家的新概念英语学习有所帮助~

  新概念英语第4册课后习题及答案大全>>立即查看

  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


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