第2题: [单项选择]用光镜能直接观察到的病毒是() A. 狂犬病毒 B. 腺病毒 C. 巨细胞病毒 D. 痘病毒 E. 单纯疱疹病毒 参考答案:D 答案解析:痘病毒和天花病毒是最大的病毒,大小为250~300nm,可用光学显微镜直接观察。
第3题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard.[A] Her sister is a fashionable woman. [C] Her sister is studying Spanish. [B] Her sister is designing a dress. [D] Her sister is in the Philippines. 参考答案:D 答案解析:[听力原文] M: I haven’t seen your sister for a long time. Where is she W: She’s in Manila studyin