某矿物呈灰白色,菱面体,三组完全解理,小刀能刻划动,遇稀盐酸强烈起泡。该矿物可定名为()。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧