第16题: [单项选择]Questions 19 to 21 are based on the conversation you have just heard.A. A novel about a president. B. A political science book. C. A listing of election results. D. A text for one of his courses. 参考答案:B 答案解析:[解析] 19-21 W: Can I help you M: Yes, I’m looking for a book on the presidential election syst
第17题: [单项选择]关于特发性性早熟,最主要特点是 A. 生长速度加快 B. 骨龄增速 C. 骨骺早愈合 D. 性发育过程遵循正常规律 E. 影响最终身高 参考答案:D