Water makes up some 70 percentage points of the body, and drinking enough water — either tap water or expensive mineral water — will ensure that the body is properly lubricated and flushed.

A．per-cent

B．per capita

C．percent

D．percentage

区别原矿品位的方法很多，其中用肉眼观察颗粒大的矿物原矿品位相对要高。