散剂按药物组成可分为
A.单散剂与复散剂
B.特殊散剂与普通散剂
C.内散剂与外用散剂
D.分剂量散剂与不分剂量散剂
参考答案：A
She brought with her three friends，none of ________ I had ever met before.
A．them
B．who
C．whom
D．these
