如今世界粮食短缺，价格飞涨，给部分地区造成社会动荡。假设在你校开展的研究性学习中，你们小组以World Food Crisis为题进行研究，现在请你代表你们小组向全体同学简要介绍你们的研究成果。主要内容如下：
造成的原因：
1. 气候变化，造成粮食减产
2. 工业发展，城市化加速，耕地减少
3. 世界能源价格上涨，使用粮食生产生物燃料
应对的措施：
1. 注重环保，改善生态
2. 严格保护耕地
3. 富国支持穷国，促进世界和谐
你如何做出自己的贡献
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注意：1. 内容包括以上要点，但不要逐句翻译
2. 字数150左右，文章开头已提供，不计入总词数
3. 参考词汇：城市化 urbanization 生物燃料 biofuels
Hello, everyone,
Now Ill tell you something about our research project The World Food Crisis on behalf of our group. As you know, food shortages have hit many countries in the world and even caused social unrest in some areas.
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【命题方向与写作提示】
这是一篇提纲式的议论文写作素材，探讨国计民生的社会热点话题：粮食价格上涨。写作时要注意避免逐句翻译，并适当增加细节以使行文连贯。
范文 (One possible version)
Hello, everyone,
Now Ill tell you something about our research project The World Food Crisis on behalf of our group. As you know, food shortages have hit many countries in the world and even caused social unrest in some areas. But who is responsible for the current world food crisis? First, annual world grains output has declined because of climate change. Then lots of farmland has been lost due to the rapid development of industry and urbanization. Besides, faced with the rising energy prices, people have turned to the production of biofuels, which has worsened the severe situation.
Then what should we do to deal with the problem? On one hand, we should focus on the environmental protection and improve the ecology. On the other hand, strict measures should be taken to protect farmland. Of course, to build a harmonious world the developed countries should take their responsibilities to help the poor ones experiencing food shortage.
As for me, I will call on the people around me to live thriftily. And for the moment, I think, we should study hard to develop science and help solve the food shortage in the future.