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          成人英语三级考试(学位英语)

            虽然地球高空平流层的臭氧可以吸收对人体有害的短波紫外线,但在地球表面,高浓度的臭氧会刺激和损害神经系统、呼吸系统等,对人体健康产生负面作用。

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