第27题: [单项选择]枢椎齿状突原发骨化中心有() A. 1个 B. 2个 C. 3个 D. 4个 E. 以上均不对 参考答案:B
第28题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. He has lost his history book. B. He doesn’t like the history course. C. He has to read a lot of history books. D. He finds history books difficult to understand. 参考答案:C 答案解析:[听力原文]
W: Why are you so tired and upset
M: I’ve been taking the history course this term. But th