—I hope that you can remove the difference between you and Susan and become good friends. —________.If only Susan had the same idea. A.My pleasure B.It’s a pleasure C.By no means D.By all means 答案:D下列说法正确的是( )
A.凡金属元素与非金属元素之间都形成离子键
B.形成离子键的微粒必须是金属阳离子与阴离子
C.含有离子键的化合物中,也可能还含有共价键
D.非金属元素形成的化合物一定不存在离子键