昏迷
参考答案:昏迷:是指觉醒状态和意识内容均出现严重障碍的一种病理状态。
已知圆C的圆心在直线l:x-2y-1=0上,并且经过A (2,1)、B(1,2)两点,求圆C的标准方程.
—Your watch is so beautiful. It must be expensive.
—Not at all. I only ¥20 on it.
A. cost B. spent C. paid