药物分析的任务是什么
参考答案:药物分析的任务:研究药品及其各种制剂的组成、理化性质、真伪鉴别、纯度检查及有效成分的含量测定等。
句型转换。
1. Wang Hong often helps her classmates.(改为否定句)
__________________________________________________
2. Mr Wang will give us a talk next Sunday.(对画线部分提问)
3. The children are reading.(加上write改为选择疑问句)
4. My mother is doing some washing.(对画线部分提问)
_________ your mother ________?
5. Mr Wang is going to Beijing with his sister.(对画线部分提问)