We are now living in a common home. That is the earth. She provides us with enough food, enough water and enough living room. So we must do everything to protect her. There are lots of big or small, red or green, beautiful gardens around us .But there are still some other lands bare of grasses or trees on the earth. Some people may ask why not led all lands covered with trees, flowers and grasses? Why not prevent the lands from being desert? Why not prevent the air from being polluted? And why not prevent the earth from being poisoned? Yes! Our environment is being polluted faster than nature and man s efforts can prevent. Time is bring us more people, and more people will bring us more industry. So many trees will be cut down, and more large cities will be set up. Lots of waste material, in return, is produced and harms the environment. So some experts declare that the balance of nature is being destroyed. The survival of man is in danger. We feel really sad about it. What can we do to solve this problem? We must forbid cutting down trees and forbid killing animals and pouring waste water into rivers and so on. We ll never destroy the balance of nature. Let s get along well with all animals. Let the trees, flowers and grasses come back to our home. Because we have only one home --- the earth.
GMAT数学机经的意义及难题的应对方法
GMAT数学复习计划及注意要点分享
GMAT数学词汇整理:方程、集合、数列词汇
GMAT数学中常用的几何词汇整理
GMAT数学常用理论大盘点
常见的GMAT数学错误整理
GMAT数学公式整理:代数
GMAT数学难题的解答方法指导
GMAT数学满分秘笈大揭秘
GMAT数学解题方法讲解:排列组合
GMAT数学练习题6道(附答案)
10个GMAT数学高分技巧总结
GMAT数学高分技巧分享
如何备考才能实现GMAT数学高分?
考生常犯的GMAT数学错误整理
快速提升GMAT成绩的三个步骤
GMAT数学词汇整理:数学运算词汇
GMAT数学机经的使用指南
GMAT数学词汇总结:分数、小数
GMAT数学的常考考点介绍
GMAT数学词汇整理:几何-坐标词汇
GMAT数学词汇整理:代数-数论词汇
快速提高GMAT数学成绩的方法
GMAT数学词汇整理:平面几何、立体几何词汇
常用的GMAT数学基本概念整理
拿下GMAT数学高分的八个步骤
解决词汇问题是备考GMAT数学的第一要务
快速提高GMAT数学成绩的经验和技巧
GMAT数学:排列组合题的解题策略
GMAT数学入门需要注意的两个要点
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