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最佳答案：In our daily life environment,can finally see casually discarded plastic bag to
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最佳答案：2008年12月四级写作范文一1.一次性塑料袋曾被广泛的使用2.造成的问题3.限制使用的意义Disposable plastic bags were once
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最佳答案：Presently, a new lifestyle called low carbon life is spreading every corner of o
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最佳答案：One day,a boy was taking a walk through the park.He saw an old woman with a a ba