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We can eliminate pollution completely by the year of 2008. [br] Controlling air
We can eliminate pollution completely by the year of 2008. [br] Controlling air
游客
2024-06-18
43
管理
问题
We can eliminate pollution completely by the year of 2008. [br] Controlling air pollution is another crucial objective; ______devices can reduce the harmful gases emitted from the engine.
选项
答案
pollution-control
解析
第10段倒数第2句,有必要在汽车尾部安装控制污染的装置来减少污染。
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