塞纳河:奥运选手面临污染问题的历史挑战.
Reading
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巴黎的塞纳河以前很脏,不能游泳。 为了奥运会,巴黎花了好多钱,把河水变干净了。
奥运会比赛开始了,大家都很关心水质。 如果水里的细菌太多,运动员会生病。
巴黎的雨水和污水用的是同一个管道系统。 下大雨的时候,脏水会流到河里,水就不干净了。
为了奥运会,巴黎建了一个很大的池子来装雨水。 还修了污水管道,让河水变得更干净。
虽然水变干净了,但是下雨天还是会有细菌。 运动员游泳的时候,要小心不要喝到河水。
Questions
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巴黎的塞纳河以前怎么样?
以前很脏,不能游泳。
为了奥运会,巴黎做了什么?
花了好多钱,把河水变干净了。
运动员游泳时要小心什么?
要小心不要喝到河水。
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