41.The1976earthquakeinTangshanwasoneofthegreatestnatura...
问题详情：41.The1976earthquakeinTangshanwasoneofthegreatestnatural________(灾难)inhistory.42.Theemptionprobablyisn’tbigenoughtocause________(全球)climatechanges.43.Whatimpressedmemostwasthedevice______...