Getting old, are we?  Reflexes slowing down? At one time, the automobile driving manual said the average driver’s reaction time was: ..75 seconds    -or-     1 car length for every 10 mph… Test your reaction time with this special test. 如果看见羊跑出来,以最快速度点击下面那个dart图案的按钮。一共五只羊,然后会有评估的反应级别,试试吧! (阅读全文)