第17题: [单项选择]Passage One
Questions 16 to 19 are based on the passage you have just heard. A. By teaching additional English classes. B. By writing stories for American newspapers. C. By working part time for the Peace Corps. D. By doing odd jobs for local institutions. 参考答案:B 答案解析:Question 19
How did Donna make extra money to support herself
第25题: [单项选择]硝苯地平胶丸处方的内容物是:硝苯地平5g,聚乙二醇400****220g,囊材:明胶100份、甘油55份、水120份比例混合,共制成1000丸。 在囊材中加入甘油的作用是() A. 崩解作用 B. 保湿作用 C. 助溶作用 D. 混悬作用 E. 乳化作用 参考答案:B 答案解析:1.PEG400易吸湿,使胶丸壁硬化。2.由于PEG400易吸湿,使胶丸壁硬化,故在囊材中加入甘油起保湿作用。