【121129】❤EFY❤【阅读阅开心】No.92

发表于:2012-11-29 22:40 [只看楼主] [划词开启]



(左键刷蓝不会的单词-点击查词-即见单词的音标释义,回复者体会者另外奖励150沪元)
点击查看大图
点击查看大图 很高兴新的一期节目终于和大家见面了,实在不好意思哦,前段时间没有及时更新,让大家久等啦。。。嘿嘿~~~~自我介绍一下哈,我是“阅读阅开心”的新主持,慕容轩尘,希望大家多多关照,期望与大家的共同进步哦~~下面我们来看今天的阅读大餐吧~~

Municipal sewage is of relatively recent origin as a pollutant. It was first brought to public attention in the 19th century by a London physician who showed that the city's cholera outbreak had been caused by just one contaminated well. Even though the contamination of drinking water by disease germs has been nearly eliminated in this country, hundreds of communities are still discharging raw sewage into streams and rivers.When we consider that this sewage contains effluents from toilets, hospitals, laundries,industrial plants, etc., then the potential of the pollutants as a health hazard is apparent.
  The problem of municipal sewage disposal is complicated by the fact that, years ago, mostcities combined their storm and waste disposal sewers. Many of these combined systems work well, but others cannot cope with sudden heavy rains. When such storms occur, water mixed with sewage may flood and disable treatment plants unless bypassed, untreated, into a stream. In either case, the people may have little protection for several days from these wastes that may contain disease germs.Even if adequately treated to eliminate the health hazard, sewage is aesthetically undesirable because of odors and colors produced. Detergents have posed a particular disposal problem. Although there is no indication that they are injurious to health, they can cause foaming, which can clog treatment plants and, at the least, spoil the scenic beauty of streams.Rural and suburban residents should be aware that septic tanks and cesspools are a potential source of pollution to ground water supplies. This is especially true in the suburban areas with a high population density and with no municipal sewage disposal and treatment system available. In some areas, sewage disposal is accomplished by cesspools. Soil research is furnishing guidelines for more effective and safer use of systems such as these.


点击查看大图OK,文章的大概意思都看懂了么?下面让我们做两道题来试试吧~


点击查看大图嘿嘿~~你做对了吗?希望以后的节目能得到大家的多多支持哦!!!我是慕容轩尘,你们的阅读好友哦~~~
~O(∩_∩)O~, 订阅节目戳这里哦~~~

PS.往期节目还没做的亲,点我进入节目单,奖励照发哦~~~\(≧▽≦)/~~~

答题区

1、This passage is concerned primarily with the _____ 。
2、In densely populated suburban areas, a danger exits from _____ .
最后编辑于:2012-12-01 10:42

本帖来源社刊

全部回复 (61) 回复 反向排序

  • 0

    点赞

  • 收藏

  • 扫一扫分享朋友圈

    二维码

  • 分享

课程推荐

需要先加入社团哦

编辑标签

最多可添加10个标签,不同标签用英文逗号分开

保存

编辑官方标签

最多可添加10个官方标签,不同标签用英文逗号分开

保存
知道了

复制到我的社团