--- ________ you ________ to live in Qiandao Lake?

--- Yes , I did.  But in 2005, I came to Hangzhou with my family.

A．Did, used

B．Were, use

C．Do, use

D．Did, use

下面程序段的输出结果是 ______。
char *s= "12345";
s+=2；
cout＜＜s；

A．345

B．字符'3'

C．字符'3'的地址

D．无确定的输出结果