天王补心丹中配伍桔梗的作用是
A.载药上行B.宁心安神C.健脾助运D.宣肺利气
参考答案:A
—Do you often get on-line?
—Yes. I ______ most of my time on it .It’s a good way to kill the time.[ ]
A. cost
B. spend
C. pay
D. take
早期诊断缺铁性贫血最灵敏的指标为()
A.末梢血中红细胞减少
B.末梢血中血红蛋白减少
C.红细胞游离原卟啉增高
D.血清铁减少
E.血清铁蛋白降低