20xx有趣的英語演講話題-文庫吧在線文庫
【正文】 , destroyed nature organizations, to the eradication of mankind. therefore, the environment must be linked with social ethics, character education and practice acts as an important element of it. everyone must fulfil its responsibilities and obligations to protect the environment. environmental problems are being more and more serious all over the world. for example, cars have made the air unhealthy for people to breathe and poisonous g
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