严重面磨损引起颞颌关节紊乱病的主要原因是（）

A.颌间垂直距离过短，引起关节损伤

B.边缘嵴和发育沟缺损，导致面外形不完整

C.不均匀磨损遗留高陡牙尖，造成咬合创伤

D.牙本质过敏，造成力不足，损害关节

E.长期的咀嚼使力应力集中，损害关节

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