（）should be responsible for loading,handling,stowing,carrying,keeping,carring for and discharging the goods carried according to the normal practice.

A.The shipowners

B.The shippers

C.The carriers

D.The ship’s officers

以下药物中，属于“妊娠毒性A级药物”的是

A．甘露醇

B．别嘌醇

C．布美他尼

D．氨苯蝶啶

E．葡萄糖酸钾