题目

下列判断错误的是 A．稳定性：H2O＞H2S＞H2Se B．半径：Na+＞Mg2+＞F－ C．酸性：HClO4＞H2SO4＞H3PO4     D．碱性：NaOH＞Mg(OH)2＞Al(OH)3  答案：B解析: 8.(突然) ，the baby started to cry. And we didn’t know what to do.