题目

一David is outgoing． — _____Both of them are popular at school．          A．So is Tom．    B．So he is．         C．Neither does Tom． 答案：A（2008?江西）下列物质能跟镁、氯化钡溶液、氢氧化钠溶液都发生反应的是A．K2CO3溶液            B．CuSO4溶液          C．Ca（OH）2溶液       D．．