【要求】
随着经济的快速发展，大城市中的高楼越建越多，道路越修越宽，但树木却越来越少。以国庆五十周年为契机，国家号召各大城市努力整顿市容，拆除违章建筑，增加绿化面积。这无疑是个造福子孙的明智之举。请你以下面三句话分别作为三段段首主题句，以绿化我们的城市为题，写一篇文章。
with indutrie and buine developing quickly, the number of tree in many big citie ha dramatically reduced.
making citie greener ha many advantage.
making our citie greener require nationwide effort.
【范文】
make our citie green
with indutrie and buine developing quickly, the number of tree in many big citie ha dramatically reduce. effort are being made to prevent people from cutting more tree. but a lot of tree are being detroyed by people who have never thought of the importance of green plant.
making citie greener ha many advantage. firt, it can make our air cleaner. ome reearcher have proved that tree can reduce the amount of carbon dioide in the atmophere through aborption. econd, it can make our citie more beautiful. with tree and flower everywhere, living condition can be improved. finally, it can produce timber----an effective way to olve the problem of limited upply of natural reource.由好作网www.hAOzuowEn.com整理
making our citie greener require nationwide effort. people in every field hould not only know about the importance of keeping the quality of urban environment, but alo take common action to plant more tree and flower o a to improve our living condition.
【评语】
本文按照题目所给的三个主题句分三段展开论述：论点突出，论据充分，层次分明。语言连贯流畅，表达准确。