下述哪种因子不存在于血浆中?()
A.Ⅴ因子
B.Ⅲ因子
C.Ⅹ因子
D.Ⅻ因子
E.Ⅶ因子
参考答案:B
Growing all over the hill and around the lake _____ of different colours. [ ]
A. are wild flowers
B. wild flowers are
C. is a wild flower
D. a wild flower is
()
A.109
B.110
C.120
D.160