第21题: [单项选择]急性中毒可引起瞳孔扩大的药物为() A. 阿片类 B. 抗胆碱类药物 C. 毒扁豆碱 D. 毛果芸香碱 E. 巴比妥类 参考答案:B
第22题: [单项选择]Questions 19 to 22 are based on the conversation you have just heard. A. Frank’s talent for teaching. B. Frank’s interesting approach to research. C. A present he received for graduation. D. A congratulatory letter from the department. 参考答案:A 答案解析:[听力原文] What is the gift the professor refers to