以下为设计成靶向性制剂的前体药物是
A．氟奋乃静庚酸酯B．磺胺嘧啶银C．雌二醇双磷酸酯D．无味氯霉素E．阿司匹林赖氨酸盐
参考答案：C
中央决定放开"单独二胎"政策。
It is said that the fantastic movie made by the Physics Office _____ the students’ real life. [ ]
A. is based by
B. based on
C. is based on
D. based by
