is known to  us all is that America is a developed country         _________the First World.

A．Which; belonged

B．As; belonging to

C．What; belonging to

D．It; belonging

购进药品应符合的条件（）

A.合法企业所生产或经营的药品

B.具有法定的质量标准

C.除国家未规定的以外，应有法定的批准文号和生产批号

D.包装和标识符合有关规定和储运要求