![Every30secondsthereisanearthquake.Butdon'tworrybecausem...]( "Every30secondsthereisanearthquake.Butdon'tworrybecausem...")
- 問題詳情：Every30secondsthereisanearthquake.Butdon'tworrybecausemostaresoweakthattheycannotbefelt.Onlyafewbigoneshurtpeople.ManyearthquakeshappenedinChina,suchasthebigoneinSichuanin2008.Thousandsofpeoplediedinit.Soit'simportanttoknowwhattodowhenonehi...
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