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Earthquakes are common：thousands of them happen each day．But most are too weak to feel．During a ___1__ earthquake，there is often a great noise first；Then the earth ___2___ terribly and many houses ___3___ down．Railway tracks break and trains go off lines；a great many factories are destroyed（毀壞）；thousands of deaths are caused，and many more people lose homes．Besides the great damage and deaths caused by the earthquake ___4___，other accidents such as fires often __5___．More buildings rare destroyed and more deaths caused．

1．A．real                       B．weak                   C．big

2．A．moves                   B．shakes                 C．breaks

3．A．fall                B．put                      C．set

4．A．lonely                    B．itself                    C．themselves

5．A．follow                   B．enter                    C．go