什么是岩石的密度？
参考答案：
岩石的密度是指：岩石单位体积内，所占固体颗粒（不含孔隙容积）的多少。
Have you ever had a case _______ someone accused your journalists of getting the wrong end of the stick?
A．where
B．which
C．that
D．when
“青记”
