药物化学的研究对象是（）
A.中药饮片
B.化学药物
C.中成药
D.中药材
E.生物药物
参考答案：B
We hope the bridge ______ the road ______ will be completed as soon as possible. We can’t bear the inconvenience any more.
A．to; being carried out
B．of; carried out
C．on; to be carried out
D．to; carrying out
三星级加油站年加油量必须等于、大于4000吨，按《华北公司星级加油站考评细则》，一至七项考评总分在（）分以上.
