在这15年中，2.5万亿美元用于发展援助的资金以及发展中国家的预算的大头应该用在健康、环境、粮食、水还是教育上？
Should a larger share of the $2.5 trillion that will be directed toward development aid over that period, and of developing-country budgets, be directed toward health, the environment, food, water, or education?