【参考范文】

　　Hello，everyone，

　　Now_I'll_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 grain 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 biofuel，which has worsened the severe situation.

　　Then what should we do to deal with the problem？On the 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 help the poor ones.As for me，I will call on the people around me to live thriftily.And for the moment，we should study hard to develop science and help solve the problem of food shortages in the future.

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