独立写作：
Do you agree or disagree: student activities do as much benefit as academic study.【同不同意：学生除了常规课要不要学音乐和艺术这样的课外课程?】重复2012.7.6NA.
综合写作：
是讲spreading beetles 对willow trees 和 ecosystem 的好处和坏处。
beetle控制外来物种tree好处坏处
reading 1beetle eat other food source
2cannot be replaced by native trees
3other spieces in danger lecture1balance不可能eliminate 2plan to move native willows there 3not ideal for bird nesting