若牙石覆盖面积占牙面的1/2，且牙颈部有连续而厚的龈下牙石，则牙石指数为()
A．0
B．1
C．2
D．3
E．4
参考答案：D
没有法定依据或不遵守法定程序的，治安管理处罚无效。 ( )
The client with diverticulitis is treated as an outpatient with drug therapy. Which drug therapy will most probably be employed
A．Antidepressants.
B．Laxatives.
C．Steroids.
D．Broad-spectrum antibiotics.
