第18题: [单项选择]液体制剂中常用的聚乙二醇分子量为() A. 100~300 B. 300~600 C. 400~800 D. 500~1000 E. 1000~2000 参考答案:B 答案解析:液体制剂中常用聚乙二醇300~600,为无色、澄明液体,理化性质稳定,能与水、乙醇、丙二醇、甘油等溶剂任意混合。所以答案为B。
第28题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. Tom doesn’t listen to her. B. Tom is unable to hear well. C. Tom didn’t say anything at the meeting. D. Tom went out before the meeting’ was over. 参考答案:A 答案解析:[听力原文]
M: Didn’t you tell Tom about the meeting
W: Whatever I say to him goes in one ear and out