Li Keqiang, graduated from __________ Department of Economics of Peking University,was elected _________ Premier of the People's Republic of China.

A．a; the

B．/;the

C．the;/

D．the; a

船舶的入境检疫，必须在港口的检疫锚地或者经检验检疫机关同意的指定地点实施。( )