不论以何种比例混合,将甲和混合气体同时通入过量的丙溶液中,一定能产生沉淀的组合是 序号 甲 乙 丙 ① CO 2 SO 2 石灰水 ② HCl CO 2 石灰水 ③ CO 2 SO 2 Ba(NO 3 ) 2 ④ NO 2 SO 2 BaCl 2 ⑤ CO 2 NH 3 CaCl 2 A.①③④ B.②③④⑤ C.①②③④ D.①②④
【简答题】My mother is a kind and nice woman. 小题1: ____ One Sunday night, when I was watching the film Harry Potter very happily, she asked me to go to bed. 小题2: _____ _ that I didn’t move. But for a while, I n...
【简答题】Every night, my mother would come to my room, lean down and push my long hair out of the way, then kiss my forehead. I don't remember when it first started me --her hands pushing my hair that way. But...
【简答题】Every night, my mother would come to my room, lean down and push my long hair out of the way, then kiss my forehead. I don't remember when it first started 26 me --her hands pushing my hair that way. ...