考点跟踪突破39 完形填空(二)
(一)(2014，盘锦)
The natural world teaches us a great deal about recycling.In nature，recycling happens every day.For example，when leaves fall to the ground，they will turn into compost (肥料)，helping __1__ grow healthily and strong.When an animal dies，it becomes food for __2__ animals.Nothing is wasted.But humans have created things like bags __3__ can't be broken down by nature.Our rubbish kills animals and __4__ water and soil.If we continue making __5__ rubbish，the problem will only get worse.If nature can't reuse the rubbish，we __6__ recycle it.We should clean up the rubbish we've made because nature can't.
