第20题:[单选题]在日常饮食中缺乏下列哪些造血原料易引起贫血①铁②维生素 B ③叶酸④蛋白质 A.①②③ B.①③ C.②③④ D.④ E.①②③④ 参考答案:A
第21题: [单项选择]What did the woman do A. She sold a computer. B. She bought a computer. C. She borrowed a computer. 参考答案:B 答案解析:[听力原文] M: How much did you pay for your computer F: Six thousand yuan.