第31题: [单项选择]{{B}}Question 11 to 18 are based on the conversation you have just heard.{{/B}} A. $2.00. B. $6.00. C. $4.00. D. $5.00. 参考答案:B 答案解析:[听力原文]
M: This book is $ 2.00 and the blue one is a dollar more.
W: The red one is twice as much
第38题: [单项选择]头孢羟氨苄的有关物质检查() A. 正相HPLC色谱法 B. 反相HPLC色谱法 C. 生物学法 D. 离子色谱法 E. 分子排阻色谱法 参考答案:B 答案解析:头孢羟氨苄的有关物质检查用反相HPLC色谱法;盐酸四环素的含量测定用反相HPLC色谱法;硫酸庆大霉素的含量测定用生物学法。