Food Shortage

　　From the very interesting cartoon, we can see many people are crowding on earth. Food on earth is far from enough to feed the surprisingly increasing population.

　　As you know, food shortage has hit many countries in the world and even caused social unrest in some areas. There are many reasons for the current world food crisis. First, annual world grain output has declined because of climate change. Besides, lots of farmland has been lost due to the rapid development of industry and urbanization.

　　Then what should be done about 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. In fact, the developed countries should take their responsibilities to help the poor ones suffering food shortage.

　　参考范文

　　Ms.Morgan，

　　I am so sorry that I won’t be able to attend the lecture on American history tomorrow afternoon.My uncle is returning home from France，and I have promised to meet him at the airport at 3∶30 tomorrow afternoon.

　　I am very much interested in American society and history.I wonder if it is possible for the talk to be recorded，and if so，could I borrow the tape？It would mean a great deal to me to listen to the tape and make up for what is covered in the talk.I would appreciate it if you could allow me to ask for a leave of absence.

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