（2012衢州）PM2.5又称可入肺颗粒物，主要来源于扬尘、

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（2012衢州）PM2.5又称“可入肺颗粒物” ，主要来源于扬尘、燃煤和机动车污染，影响人体健康和空气质量。下列举措能直接缓解PM2.5危害的是（）
①植树造林，建设森林城市
②浙江省公布环杭州湾地区PM2.5监测数据
③践行低碳生活，提倡绿色出行
④开发利用海洋新能源，优化能源结构

A．①②③

B．①②④

C．①③④

D．②③④

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