在一定条件下，下列转化不能由一步反应实现的是

一个物体做匀加速直线运动，第1s内的位移是6m，第2s内的位移是10m，求该物体的初速度和加速度的大小．

增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词；2.只允许修改10处，多者（从第11处起）不计分。

    The incident had happened on my way to a bookstore on the rainy Sunday afternoon.I was waiting for the green light when a girl about ten was knocked down by a passing car,that drove off quickly.A man immediately rushes to the girl to give him first aid.I joined in without hesitation.A young woman called 110 and the polices soon arrived at the scene.Fortunate she was not badly injured and we sent her to the nearest hospital.Comparing with the escaped driver,I am proud of that I did.