第26题: [单项选择]What is the woman’s replyWhat subject does the man teach now A. English. B. Chemistry. C. History. D. Chinese. 参考答案:C 答案解析:[听力原文] M: Good morning. Mary, how’s it going W: Pretty good, Bill. How about you M: Oh. I
第35题: [单项选择]According to the passage, the ability to distinguish between "self" and "nonself" enables vertebrates to ______. A. accept transplanted cells B. detect and react to invasion C. weaken their immune system D. get rid of antibiotics 参考答案:B 答案解析:从文章最后一句“......recognizes and takes action against foreign invaders and trans planted tissues that ar