第20题: [单项选择]根据病因及发病机制贫血可分为() A. 红细胞生成减少、造血功能不良二类 B. 红细胞生成减少、造血功能不良及红细胞破坏过多三类 C. 红细胞生成减少、红细胞破坏过多及失血三类 D. 红细胞生成减少、溶血、失血、再生障碍性贫血及缺铁五类 E. 红细胞生成减少、红细胞过度破坏、失血及造血功能不良四类 参考答案:C
第37题: [填空题] You will hear five people talking about e-business in different areas.
For each extract there are two tasks. For Task One. choose the areas from the list A—H. For Task Two, choose the benefits from the list A-H.
You will hear the recording twice.
参考答案:B