1．根据上图描述网络广告支出比例的变化；
2．说明这种变化的原因；
3．指出其对人们的影响和趋势。
Changes in the Percentage of Internet Advertisement

A．Modern poetry.
B．Cummings poetry.
C．Traditional poetry.
D．Beautiful poetry.

A．Less expensive.
B．More comfortable.
C．Specific fibers for specific purposes.
D．More advanced.