阅读下面的材料,根据要求作文。有一首诗写道:有朝一日,我们会在密密的树林里,在黄叶底下,拾起自己的脚印,如同当年捡拾野菜;街市华灯明灭,长桥人头攒动,我们在密密的人流中寻觅,只为捡拾曾经留下的脚印,一如当年捡起挤掉的鞋子。是的,人生处处都会留下脚印。桥上路上,街头巷尾……脚印是不会磨灭的。即使桥已坍了,路已改了,街已拆了,巷已变了……但是只要我们打开记忆的闸门,展开想像的翅膀,脚印就会一个个浮现出来。请以“脚印”为话题,写一篇文章。【注意】①立意自定。②文体自选。③题目自拟。④ read the materials below, write an article according to requirements. There is a poem written: One day, we will be in the dense woods, under the yellow leaves, picking up our footprints, as if we were picking wild vegetables; the lights in the downtown market will be destroyed, the bridges of the bridge will be shaken, and we will seek out in the dense stream. Just picking up the footprints that were once left, as in the past, picked up the squeezed shoes. Yes, life will leave footprints everywhere. The road on the bridge, the streets and lanes ... footprints will not be extinguished. Even though the bridge has collapsed, the road has changed, the street has been demolished, and the lane has changed. But as long as we open the gate of memory and unfold the wings of imagination, the footprints will come out one by one. Please use the “footprint” as a topic to write an article. [Note] 1 intends to customize. 2 style optional. 3 topics are proposed. 4