在正畸治疗过程中，有可能发生以下哪种情况（）。
A.acd
B.ad
C.bc
D.bcd
E.cd
F.abcd
参考答案：F
Tony is a lawyer now, but he in a delivery company for six years.
A．has served
B．had served
C．was serving
D．served
不等式log0.5x-8logx0.5+7＞0的解集为( )．
