He speaks French well, but of course not_______ a person born in France.

A．as clear as

B．clear than

C．as clearly as

D．the more clearly

具有抗毒蕈碱作用的药物是( )

A．地塞米松

B．呋塞米

C．阿托品

D．碘解磷定

E．甘露醇