题目

等体积等物质的量浓度的①CH3COONa与HCl；②CH3COONa与NaOH；③CH3COONa与NaCl；④CH3COONa与NaHCO3混合溶液中，下列各项排序正确的是 A．pH：②＞③＞④＞①                  B．c(CH3COO－)：②＞④＞③＞① C．溶液中c(H＋)：①＞③＞②＞④        D．c(CH3COOH)：①＞④＞③＞② 答案：B书面表达日常生活中，我们有多种多样的出行方式，请说一说：你心目中最好的出行方式是什么？请以“The Best Way for Me to Go to School”为题写一篇短文。不少于60词。The Best Way for Me to Go to School_Different students go to school in different ways in our class, but I like____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________