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题目内容
（华北水利水电大学英语）
We cainfer from the passage that quakes __________.（）
·may happeanywhere at any time
·mostly strike ioceans and mountains
·are unobservable imasses of land
·are hardly the direct cause of fatalities
·may happeanywhere at any time
·mostly strike ioceans and mountains
·are unobservable imasses of land
·are hardly the direct cause of fatalities
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