问题
选择题
As the world’s population continues to grow，the ________ of food becomes more and more of a concern. (2013·浙江，4)
A．worth
B．supply
C．package
D．list
答案
答案：B
句意为：随着世界人口持续增长，食品的供应成了人们越来越关心的事情。worth价值；supply供应；package包装；list名单。根据句意知，B项为正确答案。