第16题: [单项选择]骨髓检查早幼粒细胞86%，中幼粒细胞15%，红系9%，最有可能的诊断是 A. M1 B. M2 C. M3 D. M4 E. M5 参考答案:C 答案解析:M3急性早幼粒细胞白血病，骨髓中以颗粒增多的异常早幼粒细胞增生为主，＞30%(ANC)，其胞核大小不一，胞质中有大小不等的颗粒，可见束状的Auer小体，也可逸出胞体之外。
第17题: [单项选择]哪种情况可导致吸气性呼吸困难（）。 A. 支气管哮喘 B. 喉头水肿 C. 慢性支气管炎 D. 阻塞性肺气肿 E. 左心功能不全 参考答案:B
第18题: [单项选择] {$mediaurl} [*]What does the professor imply about making mistakes A. You should try not to make any mistakes. B. It is dangerous to make mistakes in chemistry． C. Mistakes can be a part of the learning process． D. Professional chemists rarely make mistakes． 参考答案:C 答案解析:The professor implies that mistakes can be a part of the learning process. The professor says You mi
