题型:单项选择题 关于血清白蛋白与球蛋白的叙述正确的足A.正常人的血清白蛋白为20-30g/LB.G/A之比约1.5~2.5:1C.血清蛋白总量为40~55g/LD.白蛋白显著降低不仅见于肝内疾病,也见于肝外疾病E.轻症急性肝炎病人球蛋白增高 查看答案
题型:选择题 With no one to________in such a frightening situation,she felt very helpless. [ ]A. turn to B. turn on C. turn off D. turn over 查看答案