骨与关节结核中医统称为（）
A.流痰
B.肾俞虚痰
C.穿拐痰
D.鹤膝痰
E.骨痨
参考答案：E
18个月幼儿会（）
A.并足跳
B.穿衣
C.组合2个不同音的词
D.搭桥
E.画人
Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of this mixture is X ？（）
A.A
B.B
C.C
D.D
E.E
