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新概念英语第三册习题答案及解析Lesson 42

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新概念英语第三册习题答案及解析Lesson 42
新概念英语第三册习题答案及解析Lesson 42新概念英语
新概念3课后习题答案:Lesson 42 1d 2a 3b 4c 5c 6b 7d 8b 9c 10a 11d 12b

  声。

  Multiple choice questions多项选择题

  Choose the correct answers to the following questions.

  Comprehension 理解

  1 In undertaking the descent of a really deep cave, a pot-holer ______ .

  a.must be motivated by the desire to make an unexpected discovery

  b.is prepared to spend a whole weekend away from his home

  c.needs military co-operation in making preparations for the descent

  d.may have to spend as much as a week planning his descent

  2 The cave discovered by the French potholer, Berger ______ .

  a.represents the ultimate challenge to any pot-holer who is truly dedicated

  b.was recently explored for the first time since its discovery

  c.has to be approached by following a stream which leads underground

  d.consists of a large cavern, the size of a huge concert hall

  3 On reaching the enormous cavern, the pot-holers ______ .

  a.had to squeeze into a cleft in the rocks at the side

  b.lit it up by using the arc lights they had carried down with them

  c.saw a rainbow shedding its light on the limestone around them

  d.could still hear the waterspout falling into the pool behind them

  Structure结构

  4 ---- or the chance that they ______ anunexpected discovery that…(11. 2-3)

  a.would make

  b.can make

  c.may make

  d.might have made

  5 It can take as long as eight days getting ropeladders rigged up and ______ before …(11. 9-10)

  a.to establish bases supplied

  b.supplying bases established

  c.establishing supply bases

  d.bases established and supplied

  6 After ______ the narrow gap, they climbed down the steep sides of the cave. (11. 18-19)

  a.they were entering

  b.entering

  c.entered

  d.they will enter

  7 ---- let ______ the current to the other side . (11. 22-23)

  a.them be carried with

  b.their being carried by

  c.themselves carry

  d.themselves be carried by

  8 No other sound could be heard ______ made by water…(11. 30-31)

  a.except it was

  b.than that

  c.that was

  d.but this was

  Vocabulary词汇

  9 It can take ______ eight days to rig up… (1. 9)

  a.around

  b.more than

  c.up to

  d.at least

  10 ---- has tunnelled a course through a ______ in the rocks. (11. 13-14)

  a.fault

  b.gap

  c.cleft

  d.fissure

  11 They had to ______ along this …(11. 19-20)

  a.sidle nervously

  b.file sideways

  c.walk sharply

  d.move cauriously

  12 To protect themselves from the ______ water, they wore special rubber suits. (1. 23)

  a.frozen

  b.freezing

  c.chilly

  d.iced
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