下列各组物质中,互为同分异构体的是[ ]
A.O2和O3
B.11H和 21H
C.CH4和CH3CH3
D.和CH3-CH2-CH2-CH3
答案:D
小儿肺炎喘嗽邪陷厥阴证的主要临床表现有
A.壮热烦躁
B.四肢抽搐
C.神昏谵语
D.喉间痰鸣
E.咳嗽加剧
My friend Jane works as _______as his brother.
A. hard B. harder C. hardest