四级英语作文范文精选三篇
　　四级英语作文范文精选三篇
　　导语：学习，就象是一场战争，有时你觉得在这拼命撕杀的战场上，你是孤独与无助的，但你殊不知，你其实并不是孤身奋战的！下面本店铺为大家整理了四级英语作文范文，欢迎阅读。
　　篇一：
　　节约资源问题
　　Causes：
　　Firstly，the ever-increasing population is a leading cause of water shortage. As populations increase, the demand for water grows accordingly.
　　secondly, people everywhere waste water without even realizing it: showers last too long， taps are left running and so forth.
　　Last but not least, the industrial production will cause water contamination and it will ...