精油经毛孔渗入血液，加速人体新陈代谢，排除体内多余水分及废物，令滞呆的器官活跃起来，从而增强人体对疾病的（）能力。
参考答案：免疫
—May I borrow your English novel now?
—______. I’ve been reading it since last Monday.
A．Not really
B．Take your time
C．My pleasure
D．No way
求抛物线y＝x2上点到直线x－y－2＝0的最短距离．
