【简答题】In almost every big university in the United States, football is a favourite sport. American football is different. Players sometimes kick the ball, but they also throw the ball and run with it. They ...
【单选题】题目:一个球从100米高度自由落下,每次落地后反跳回原高度的一半;再落下,求它在第10次落地时,共经过多少米?第10次反弹多高?Sn = 100.0Hn = Sn / 2for n in range(2,11): _____________ Hn /= 2print ('Total of road is %f' % Sn)print ('The tenth is %f meter' % Hn)