小作文

柱图fuel prices in 2 states in USA;

大作文

As countries develope, their populations tend to live individually or in a small family units. In your opinion, what is this cause and what are the effects on society.

A类 

task1 As country develops, a large population live individually or live in small family unit. Discuss causes and effects on society 

task2 2个bar chart 比较两个美国省柴油和汽油价格变化从2005到2009