He _______ cards with his friends, but now he _______ a walk after supper.

A．used to play; is used to having

B．is used to playing, used to have

C．used to play; is used to have

D．is used to playing; is used to have

在行政许可的种类中，认可的主要功能是( )。

A．分配稀缺资源，一般有数量控制

B．提高从业水平或者某种技能、信誉，没有数量控制

C．防止危险、保障安全，一般没有数量控制

D．确立申请人的市场主体资格，没有数量控制