第11题: [单项选择]肝造血达高峰的时间是() A. 胚胎第8周 B. 胚胎第3个月 C. 胚胎第4~5个月 D. 生后4~5天 E. 生后2~5周 参考答案:C 答案解析:肝从胚胎6~8周开始造血,4~5个月达高峰,生后4~5天停止。骨髓从胚胎4~5个月才开始造血,生后4~5天成为唯一的造血场所。
第24题: [单项选择]What do you know about Mike A. He still can’t write well. B. He can write very good English now. C. He finds it easy to write now. D. He can write better now. 参考答案:D 答案解析:[听力原文]
W: How’s Mike doing with his writing
M: Oh, he’s improved his writing skills since he took