问题 问答题 案例分析题

磁浮交通工程某磁浮交通工程全长约177.351km,涉及70个敏感保护目标,主要位于2类声功能区和4类声功能区,主要背景噪声来源为道路交通和铁路,其中,13个村庄敏感点,5个学校敏感点,2个卫生院敏感点,1个敬老院敏感点。地表水现状调查数据显示,沿线地表水水质除pH值达标外,其余指标均未达到相对应的水环境功能区划的要求,主要超标的污染因子有总磷、氨氮,其次是BOD5、DO、石油类。拟建工程区域的环境空气质量尚好,可达到国家二级标准,但部分点位TSP超标。沿线静磁场、工频(50Hz)电场、磁场、无线电干扰、电视信号均符合环境标准。根据项目初步计划,预计施工期持续时间将为2年左右。工程需要架设桥梁,涉及动迁、征地、征用鱼塘、占用水源涵养林等问题,但征地比例较小,同时已经就沿线的文物古迹与当地有关部门取得联系。

本项目对生态环境的影响有哪些?

答案

参考答案:

本项目对生态环境的影响如下。

(1)对动植物生态环境的影响工程对该区域的植物生态的影响主要体现在工程占地和道路阻隔引起局部区域农作物和林地布局发生变化。

(2)对水生生物的影响工程的建设需要征用部分鱼塘,使区域内的水产养殖面积减少。桥梁的施工过程中钻孔打桩,产生的泥浆水以及打桩钻孔的振动对水产养殖有一定的影响。

(3)对水土保持的影响项目建设占用水源涵养林,为使涵养林能继续充分发挥固土护堤、涵养水源的功能,施工时须注意避免破坏原有植被,并注意做好施工设计和组织,合理调配土石方,选取合理的取弃土场。线路外围遭破坏的植被应在施工完毕后尽快全面恢复,并对因工程建设而损失的涵养林进行适当的生态补偿。

完形填空
任务型阅读(共两节,满分35分)
A Journey of Discovery
The Adventures of Huckleberry Finn by Mark Twain is one of the most famous American novels.
Published in 1884, it was one of the first novels in the USA written in common, everyday language. For example, using non-standard English, Twain wrote, ‘I haven’t got no money,’ to mean ‘I do not have any money’. In this way, Twain made his characters very true to life.
The story is told by Huckleberry Finn, called Huck for short, who runs away to escape his abusive father. At first, Huck goes to a small island in the middle of the Mississippi River. There, he finds Jim, a black slave who has run away to escape slavery. The two of them stay on the island for a few weeks and become friends, but they must leave because Huck learns that people are looking for Jim. They decide to travel on a raft on the Mississippi River to reach the Ohio River, which will take them north to a state that does not allow slavery.
During their journey, Huck and Jim visit many places along the river and meet many different people. Unfortunately, most of the people they meet are not good. For instance, Huck and Jim meet a family, the Grangerfords, who have been fighting with another family, the Shepherdsons, for so many years that nobody remembers how the fight began. While Huck stays with the Grangerfords, the fighting starts again, and several members of both families are killed. Lat6r, Huck and Jim meet the King and the Duke, two men who take control of their raft and make money by tricking people. During the confusion following one of these tricks, Huck and Jim escape with their raft.
Although the people Huck and Jim meet are bad, they are also funny. Mark Twain used humour to show readers the problems of American society in the t800s. More importantly, despite all of the bad things that happen to Huck and Jim, the novel has a happy ending for both of them. Jim gets his freedom because his owner has died and set him free in her will, and Huck learns that his father has died, so he is also safe.
The Aclventures of Huckleberry Finn is an adventurous and humourous story, and it teaches modern readers a lot about American society in the 1800s.
The passage
The passage ‘A journey of discovery’ is a brief (71) _______ to the novel The Adventures of Huckleberry Finn by Mark Twain, which (72)________ out in I884.
The novel
The Adventures of Huckleberry Finn, one of the most famous American novels, is an adventurous and humorous story. The novel was (73) __________ in America in the 1800s, when slavery existed. In the novel Mark Twain used common and everyday language to make his characters very true to life and used humour to (74) _________ readers the problems of American society in the 1800s.
The main
(75) _______
Huck fled his father and settled himself on an island in the Mississippi River, (76) __________ he met Jim and made friends with him.
(77) ___________ that people were looking for Jim, they decided to travel to a northern state that did not allow slavery.
During the journey, Huck and Jim visited many places and met many different people.
Though many of the people they met were not good, they (78) ____________.
Conclusion
Modern readers can learn a great (79) ____________ about American society in the 1800s from Huck and Jim’s adventures during their journey to (80) ____________
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