耧斗菜的花冠很有特点为有距花冠，每一花冠有（）个距。
A.1
B.4
C.5
D.3
参考答案：C
Which subject is _____ , English, math or Chinese?
A. the most difficult
B. the more difficult
C. most difficult
固体物质往往具有有机物质性质，一般在燃烧时产生灼热的余烬。
