求该椭圆的标准方程;
参考答案:[*]QQ截图20140625151022.jpg
Lucy was completely _____ after jogging in the hot sun all afternoon; she had little energy left.
A.kicked out
B.worn out
C.handed out
D.put out
水洗后醚后碳四中的水可以在脱重塔中脱除。