3月14北美的考生能帮我回忆下综合写作吗

cream139

记得是将讲一种东西危害树木 怎么除掉它
但是具体讲了什么拿不准，不知道蒙对多少

awinston

1. Beetles damage ash trees. The article talks about how to save ash trees.
- banning transportation of ash trees, which will take beetles' nests to other areas.
( they cannot prohibit private companies that cut down ash trees to be firewood. )
- drilling holes on the ash trees to inject a chemical pesticide that make beetles leave away ash trees.
( drilling to much holes will damage ash trees. The cycle of injecting a pesticide is two years)
- planting trap trees that beetles like to lay their eggs on.
( trap trees are beetles' food, which will increase the population of beetles and hurt more ash trees.)