1.organic produce
reading 3个理由
1.还是有pesticide 2.greater risk of exposure to bacteria 3.expensive
lecture 反驳
1).natural pesticide is easy to break down, even before the produce arrive the store, less harmful than normal pesticide
2).有 strict guideline 和step，不太可能产生 contamination problem.
3).expensive but worth it. 研究表明organic的东西，有更多的vitamins和nutrition。
2.students are more influenced by their teachers than by their friends. agree or disagree?
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