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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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