下列属于疫疠之邪的致病特点的是()
A.发病急、病情重
B.传染性强
C.流行性强
D.症状相似
E.易阻滞气机
参考答案:A, B, C, D
绿色植物的叶片一般包括三部分,它们是( )
A.上表皮、下表皮、叶脉
B.表皮、角质层、叶肉
C.表皮、栅栏层、海绵层
D.表皮、叶肉、叶脉
We don't like him because he is always speaking highly of the part he________in the group. [ ]
A. makes
B. takes
C. does
D. plays