英语新闻阅读：援助组织呼吁全面检查世界粮食系统

英语自学网

　　An international aid group is calling for an overhaul of the world's food
system, saying prices for staples such as corn will double in the next 20 years.
London-based Oxfam released a report Tuesday saying demand for food is expected
to rise 70 percent by 2030, as climate change, lower crop yields and rising
energy prices pressure food supplies.
        　　The group says those hardest hit will be the poor, who spend as much as 80
percent of their income on food.The report recommends addressing the problem by
boosting food reserves, ending the use of food crops in biofuels, and ending
speculation in worldwide food markets.It also calls for a shift away from
large-scale commercial food producers to smaller local growers.