不宜单独用于治疗嗜铬细胞瘤的是（）

A.哌唑嗪

B.阿替洛尔

C.酚妥拉明

D.硝普钠

E.酚苄明

________ big or small countries, we will make friends with anybody who admits that there is only one China.

A．Instead of

B．Thanks to

C．Except for

D．Regardless of