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
Choo 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
地震逃生知识
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.reprents 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
科三考试项目 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 bas supplied
b.supplying bas established
c.establishing supply bas
d.bas established and supplied
6 After ______ the narrow gap, they climbed down the steep sides of the cave. (11. 18-19)
a.they were entering
海里的恐龙
b.entering
湖北省武汉市天气 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.themlves carry
d.themlves be carried by
8 No other sound could be heard ______ made by water…(11. 30-31)
a.except it was
b.than that
一起去看流星雨
c.that was
d.but this was
Vocabulary词汇
9 It can take ______ eight days to rig up… (1. 9)
a.around基冈
b.more than
c.up to食欲减退
d.at least
10 ---- has tunnelled a cour through a ______ in the rocks. (11. 13-14)
a.fault
b.gap
c.cleft
爱读音
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 themlves from the ______ water, they wore special rubber suits. (1. 23)
a.frozen
b.freezing
c.chilly
d.iced
