听力 ，旧题目！ 阅读：第一篇， 第二篇，cost of food! 大概说，人类生产food的成本，如果加上其他因素，such as环境牺牲等， 实际的成本是很高的！等等！ 第3。说海岸的cruption. 作文， table about house work in the UK. females and males spent different amount time on that!
Task two: computers less helpful to childrens study. and some people say computers have a negitive effect on childrens physical and mental development. disagree or agree? ；