第15题: [单项选择]吐弄舌主病为() A. 中风先兆 B. 心脾有热 C. 寒凝痰阻 D. 气血俱虚 E. 脾虚湿盛 参考答案:B
第16题: [单项选择]甾体皂苷类的C17侧链为() A. 羟甲基衍生物 B. 不饱和内酯环 C. 含氧螺杂环 D. 脂肪烃 E. 戊酸 参考答案:C 答案解析:C甾类的C侧链为羟甲基衍生物,强心苷类的C侧链为不饱和内酯环,甾体皂苷类的C侧链为含氧螺杂环,植物甾醇和昆虫变态激素的的C侧链都是脂肪烃,胆酸类的C侧链为戊酸。
第20题: [单项选择]I don't think it advisable that Tom ______ to the job since he has no experience. A. be assigned B. is assigned C. will be assigned D. has been assigned 参考答案:A 答案解析:I don't think it advisable that... 从句要用虚拟语气should do, should可省略。