张子和认为下列药物皆有催吐的作用，其中有小毒的药物是（）

A.藜芦

B.常山

C.芫花

D.轻粉

E.乌附尖

The Customs surveillance zone include following places except ______.

A．Any seaport, railway and high way station, airport, border pass or international postal matter exchange where there is a Customs establishment
B．any place where Customs control is conducted
C．any place without a Customs establishment but which has been approved by the state council as a point of entry and exit
D．any place along the border of the country