第24题: [单项选择]Questions 22 to 25 are based on the passage you have just heard. A. There are neither rivers nor streams. B. There is no grass all the year round. C. It is mainly bare rock with little grass. D. There are a few streams and rivers. 参考答案:C 答案解析:[解析] Q: What do we learn about the Gobi Desert from the passage
[解析] 选C,信息明示题。文中提到戈壁
第25题: [单项选择]适用于绿脓杆菌感染的药物是() A. 红霉素 B. 庆大霉素 C. 氯霉素 D. 林可霉素 E. 利福平 参考答案:B