牙周病的全身易感因素不包括下列哪一项
A．性激素的变化B．吸烟C．不良的正畸治疗D．艾滋病E．精神压力过大
参考答案：C
Twenty men fell into the water and were _____ by other boats. As a result, they missed the fighting on the beach.
A．picked out
B．picked over
C．picked up
D．picked on
我国实行并逐步完善宏观经济调控下主要由（）价格的机制
A企业制定
B市场形成
C政府制定
D商人制定
