墨尔本PTE 阅读排序 2937

A - An estimated 109 hectares of new land (about 20% larger than Brazil) will be needed to grow enough food to feed them, if traditional farming methods continue as they are practised today.   

B - By the year 2050, nearly 80% of the Earth’s population will live in urban centres.   

C - Applying the most conservative estimates to current demographic trends, the human population will increase by about three billion people by then.   

D - At present, throughout the world, over 80% of the land that is suitable for raising crops is in use.   

E - Historically, some 15% of that has been laid waste by poor management practices.