第8题: [单项选择]Questions 23 to 25 are based on the conversation you have just heard. A. At a library. B. At a copy shop. C. At a laboratory. D. At a coffee shop. 参考答案:D 答案解析:[听力原文] Where does the man work
第20题: [单项选择]慢性肾功能不全,发展至肾衰竭期时,内生肌酐清除率通常下降至正常值的 A. 30% B. 25%~30% C. 20%~25% D. 15%~20% E. 15%以下 参考答案:C 答案解析:[解析] 在慢性肾功能不全的发展阶段中,其临床表现与肾功能密切相关。以内生肌酐清除率来反映肾功能情况。慢性肾功能不全的代偿期,内生肌酐清除率在正常值的30%以上,肾功能不全下降至正常值的25%~30%