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今天练完篮球已是黄昏,妈妈骑上电动车带着我飞快地往家奔去。来到每天必经的十字路口,车行道的高架上显示的是红灯,我们便停下来静静地等待着。我目不转睛地盯着红灯,红灯显示倒数的秒数:60、59、58、57……我顺便瞥了一眼人行道的红灯,突然发现车行道的红灯和人行道上的红灯竟不一致。当车行道的红灯到50多秒时,人行道上的红灯才20多秒。“为什么会这样呢?”我对此感到很好奇,虽然绿灯已经亮了,但为了解除心中的疑惑,我便拉住妈妈,再等下一次红绿灯。经过我的仔细观察,终于找到了答案——车行道的红灯在53秒的时候,一下
Basketball finished today is dusk, my mother riding on the electric car flew home with me quickly. Came to the crossroads must pass every day, the elevated roadway shows a red light, we stopped and quietly waiting. I stared intently at the red light and the red light showed the seconds in the countdown: 60,59,58,57 ... I glanced at the red light of the sidewalk and suddenly found the red light on the roadway and the red light on the sidewalk Inconsistent. When the red light to the roadway to more than 50 seconds, the red light on the sidewalk was only 20 seconds. “Why is this? ” I was very curious about this, although the green light is already bright, but in order to relieve the doubts in my heart, I pulled the mother, wait for the next traffic light. After my careful observation, finally found the answer - the red light on the roadway in 53 seconds, look