第3题: [单项选择]革兰染色法的染色步骤是( ) A. 结晶紫或龙胆紫液初染→碘液媒染→酒精脱色→复红或沙黄液复染 B. 结晶紫或龙胆紫液初染→酒精脱色→碘液媒染→复红或沙黄液复染 C. 结晶紫或龙胆紫液初染→酒精脱色→复红或沙黄液复染 D. 结晶紫或龙胆紫液初染→复红或沙黄液复染 E. 亚甲蓝液初染→碘液媒染→酒精脱色斗复红或沙黄液复染 参考答案:A
第34题: [单项选择]Questions 19 to 22 are based on the conversation you have just heard.A. He travels to Paris all the time. B. His company is located near Oxford. C. He does his job through the telephone. D. He currently works at home. 参考答案:D 答案解析:[解析] 19-22 W: So, what is your job exactly M: I write market reports about the chemical indus