牙周病的基础治疗不包括（）。
A.菌斑控制
B.龈上洁治术
C.根面平整
D.牙周翻瓣术
E.去除菌斑滞留因素
参考答案：D
Title: How to Meet the International Challenge after China’s Entering into WTO 1. China will enter into WTO in a few days. 2. The great challenge faced by our government as well as ordinary people. 3. I believe the following suggestions will be helpful in coping up with the future international challenges.
均质坝应使中部凸起，分别向上下游倾斜( )的坡度。
A．1%～2% B．1.5%～2%C．2%～2.5% D．2%～3%
