某免疫指标在人群中为正态分布,制定其正常值范围通常用()
A.±1SD
B.±2SD
C.±3SD
D.±4SD
E.±5SD
参考答案:B
既可祛风湿,又能治痰饮积聚的药物是()
A.独活
B.威灵仙
C.川乌
D.草乌
E.木瓜
That was the reason______ Mac gave me the other day. [ ]
A. why
B. for that
C. which
D. for which