自去年年底起，我国西南地区的旱灾持续了几个月。许多土地因干旱而颗粒无收，人们面对着缺水断粮的困境。在天灾面前，我们人类在寻找办法降低损失的同时，也应反省自己。请根据下表，写一篇文章分析出现旱灾的原因以及我们该如何从自身做起。
原因
（1）中国63%的城市面临水源缺乏，污染和工业化恶化了这种情况；（2）大量树木被砍伐，森林覆盖率急剧下降；
（3）水利工程没有合理运用，灌溉系统过于陈旧。
做法
（1）提高节约用水，合理用水，循环用水的意识；
（2）多植树，保护环境，防止水土流失；
（3）政府应加大资金投入，及时维修水利工程。
注意：(1)词数100左右；(2)可适当增加细节，以使上下文连贯；(3)开头已写好，不计入总词数。
What Lessons Should Be L earned From the Drought
The drought in the south-west China lasts for several months, which makes people face water and food scarcity. We should learn lessons from it.
The drought can be cause by several factors.______________________________________
参考范文：
What Lessons Should Be L earned From the Drought
The drought in the south-west China has lasts for several months, which makes people face water and food scarcity. We should learn lessons from it.
The drought can be cause by several factors. Firstly, about 63 percent of cities in China are facing water scarcity. The situation is worsened by pollution a nd industrialization. In addition, too many trees have been cut down, so forest cove rage has been decreasing rapidly. What's more, some water conservation projects haven't been functioning properly, thus people there have had to rely more heavily on rainfall for their water supply. Most of China's irrigation systems are very old.
In order to prevent this cas e coming about again, we should improve our awareness of saving water, makin g proper use of water and recycling water. Meanwhile, we ought to plant more trees and protect environment to prevent loss of water and soil erosion. Of course, the governments should increase investment and repair water conservation pro jects as timely as possible.
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