质地致密坚硬的骨质大部分位于[ ]
A．长骨的两端
B．长骨骨干的中央
C．长骨骨干的周围
D．短骨和扁骨中
答案：B
The task wasn't worth our efforts at all. It made little ________ no matter how hard we worked.[ ]
A. effect
B. use
C. result
D. difference
水饮流溢于四肢，称为（）
A.痰饮
B.伏饮
C.悬饮
D.溢饮
E.支饮
