英语演讲文章高二学生 参加演讲比赛（要求：3分钟） 求大神添加一些 并加以指示！~~~~~ The world food

英语演讲文章
高二学生 参加演讲比赛（要求：3分钟） 求大神添加一些 并加以指示！~~~~~ The world food crisis
First, i want everyone present to think about a question:what makes us to keep fit and live on earth?As you can guess,the best answer is the food.
But nowadays,along with the urbanized development,more and more people move to cities,which also make the cultivated land less than before.Because the population is growing exponentially, and the supply of land is fixed,so it has caused food shortages.
As you know, food shortages have hit many countries in the world and even caused social unrest in some areas.For example,in africa,south america and many other places,each day was filled with the smoke of war.Also,many people died because of poverty and starvation.More egregiously,there's still a lot of people waste food every day just because they don't like to eat.Why don't they think about the helpless and homeless people when they waste food.If those who die by hunger is one of their relatives, what will they think?
So since the problem has came,we should think of ways to solve it.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.
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As for students,I think, we should study hard to develop science and help solve the food shortage in the future.In a word,cherish the food is to cherish life,let us join hands to create the wonderful future.
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keep fit usually means maintain good body shape or condition through working out or good dieting habit.
"Good morning/afternoon, ladies and gentlemen, welcome to this presentation, first of all, ...

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