题目: 胃内滞留型制剂应具有哪些特征?如何设计该类制剂的处方? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0922/0f4b30cbef791b816f0ff6a7be1e6e5f.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:选择题 The secretary worked late into night, _____ a long speech for the president. [ ]A. to prepare B. preparing C. prepared D. was preparing 查看答案