山茱萸的性状特征有
A.不规则的片状或扁筒状
B.表面皱缩有光泽,基部有时可见果柄痕
C.新鲜时黄色
D.气微,味酸涩而微苦
E.质柔润不易碎
参考答案:A,B,D,E
— How many people are there ____________ your family?
— There are five.[ ]
A. from
B. in
叙述水生群落演替的过程。