法律关系是一种物质关系。( )
参考答案：错
The dam was not strong enough to _____ the flood waters. The people living there had to remove from their houses.[ ]
A. hold down
B. hold back
C. hold off
D. hold on
新生儿初生时网织红细胞数0.05提示（）
A.正常现象
B.生理性溶血
C.生理性贫血
D.新生儿溶血症
E.宫内胎儿失血
