引起尿毒症贫血最重要的原因是()。
A.失血过多
B.肾产生红细胞生成素减少
C.毒素使红细胞寿命缩短
D.造血原料缺乏
E.代谢产物抑制骨髓造血
参考答案:B
When I talked with my grandma on the phone,she sounded weak,but by the time we up,
her voice had been full of life. [ ]
A.were hanging
B.had hung
C.hung
D.would hang
下列降湿措施不正确的是()
A.通风
B.室内放冰块
C.空调机
D.库方遮光