The drought can be cause by several factors.
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【猜题理由】我国西南地区的旱灾牵动着国人的心，在为之痛心的同时，我们也应从中吸取教训。通过这篇文章来唤起人们的节约用水 和环保意识。环保意识也是全人类共同关注的焦点。
【构思点拨】此类作文一般分三段式：第一段点明主题：旱灾给我们带来的反思(已给出);第二段分析出现旱灾的原因;第三段写作为人类，在天灾面前应如何从自身做起。
【参考范文】
What Lessons Should Be Learned 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 and 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.