Make Our Cities Greener
Recent efforts toward the greening of our cities have achieved much, although the results are still far from satisfactory. In recent years many trees have been planted in the cities and much care has been taken of the planted trees. In spite of all this, the greening process is relatively slow compared with cities in many other countries. For example, the green space available on average to each Shanghai citizen is only 0.4 Mu while every Londoner has more than 20 Mu.
We can benefit much from making our cities greener by planting trees. First, trees absorb carbon dioxide to produce oxygen which is essential to the health of human beings. Second, trees and other greenery make our cities more beautiful. Third, trees can also improve the climate of the cities.
Since we can get so much from making our cities greener, we should spare no effort to do that. We should plant more trees and take better care of them. We also should not cut down the trees. In a word, we should do everything to add to the greening of our cities.
GRE数学考生回忆(10)
GRE数学代数备考点
GRE数学经典题目一览
GRE数学代数部分有哪些要点
GRE数学:标准偏差知识点总结
GRE数学:关于概率的考点分析
GRE数学:关于余数的误区
GRE数学词汇:几何多边形类
GRE数学常见错误一览
GRE数学高频概念一览
GRE数学:余数类型练习题
GRE数学多选题答题实例
GRE数学有关“圆”的考题
GRE数学常见考点
如何快速实现GRE数学中的单位换算
GRE数学:常见运算符号的英文表达
从例题入手解析GRE数学
GRE数学排列组合题型词汇
GRE数学术语词汇整理
详解GRE数学正态分布类问题
GRE数学专业词汇术语
GRE数学平均数问题备考解析
GRE数学复习要点
GRE数学基本概念词汇
整理GRE数学坐标类词汇
GRE数学备考七项准则
GRE数学备考顺序分析
GRE数学要点:单位转换
GRE数学难题分析汇总
GRE数学必备的公式
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |