无论对儿童、青少年还是老年,钙对人体的作用都是重要的。人体中最大的“钙库”是______。
骨
Outside people were cheering and awaiting the arrival of the new year while inside Harry was lying severely ill in bed feeling thoroughly ______.
A.overflowed
B.wretched
C.compacted
D.compiled
激光视盘是一种可重写光盘。