题干
—Glad to meet you.
—____________
A：So do I.
B：How are you?
C：How do you do?
D：The same to you.
答案(点此获取答案解析）
C
A：So do I.
B：How are you?
C：How do you do?
D：The same to you.
、H+ ②K+、
、
、OH- ③
、
、Cl-、OH- ④Fe2+、Cu2+、
、
⑥Ca2+、Na+、