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题目内容
（华北水利水电大学英语）
Wecaninferfromthepassagethatquakes__________.（）
·mayhappenanywhereatanytime
·mostlystrikeinoceansandmountains
·areunobservableinmassesofland
·arehardlythedirectcauseoffatalities
·mayhappenanywhereatanytime
·mostlystrikeinoceansandmountains
·areunobservableinmassesofland
·arehardlythedirectcauseoffatalities
参考答案
