第18题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. He doesn’t want a new printer any more, B. He doesn’t have enough money yet. C. He has just bought the printer recently. D. He lost the money he was saving. 参考答案:B 答案解析:[听力原文] W: What about the new printer you keep talking recently Have you save enough to buy it 第19题: [单项选择]巨幼红细胞形成机制以下哪项是错误的() A. 核幼浆老 B. RNA合成障碍 C. 血红蛋白不受影响 D. RNA不受影响 E. DNA合成障碍 参考答案:B