9．
将下列单词或词组填入空格。每空格限填一词，每词或词组只能填一次。
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A. may B.
strong C. afraid D. stay up E. if
F. happy G. good
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We can't stop an earthquake(地震), but we can do things to make sure they don't destroy(毁坏) whole cities. First,
it is not a idea to build houses along lines where two of
the Earth's plates(板块)
join together. Second, if you think there be
an earthquake, it is better to build houses on rocks, not on sand. Third, you
must make the houses as as possible. Weak buildings will fall down in
an earthquake, but strong ones may .
Scientists are that one day an even bigger earthquake will
hit the part around San Francisco. They call it "The Big One".
However, people today are still building more houses. The population in and
around San Francisco is now ten times more than it was in 1906.This means that there is another earthquake, a great many
houses and buildings will be destroyed.
