首页
登录
职称英语
The thousands of people forced to abandon their homes in recent weeks to flo
The thousands of people forced to abandon their homes in recent weeks to flo
游客
2024-02-07
38
管理
问题
The thousands of people forced to abandon their homes in recent weeks to floodwaters are victims not just of nature but of human error as well. Years of mismanagement of the vast Mississippi River ecosystem—the continuous and often inadvisable construction of levees(堤坝)and navigation(导航)channels, the paving over of wetlands, the commercial development of flood plains—have made the damage worse than it might otherwise have been.
The Obama administration is now completing an inspection of the guidelines governing dams, levees and other water-related projects built with federal money.
Historically, projects had been shaped by two main factors; the Army Corps of Engineers’ conviction that nature can be subdued by levees and dams, and its reflexive green-lighting of any flood control project that encouraged commercial or agricultural development. The new rules, Congress said, should require the Corps and other federal agencies to give equal weight to less easily measurable benefits like wildlife habitat and to "nonstructural" solutions to flood control like preserving wetlands, flood plains and other "natural systems. "
To give the Corps its due, it has performed nobly in the present emergency. Its main-stem levees have held. Its derision to blow holes in levees guarding the New Madrid floodway in Missouri clearly saved Cairo, Illinois, and other places downstream. These methods had long been part of Corps emergency plans. and they worked.
The question the environmental community and many in Congress are asking is whether this would have been necessary if the river had been better managed. In populated areas, some levees were built solely to attract more development, while others closed off flood plains that could have acted as a natural safety valve.
Meanwhile, over the years, the upper Mississippi watershed has lost millions of acres of wetlands that could have served as a natural sponge for floodwaters.
So-called 100-year floods seemed to be hitting the Mississippi with scary regularity—a $ 16 billion flood in 1993, a bad one in 2001, another in 2008, and now this one. Climate change, which some suspect of causing violent downpours, may be part of the problem, though the connection is unclear. What is clear is that we should learn from our mistakes, let nature help out where it can, and not build or farm in places where it makes no sense to do so. As the saying goes, nobody ever beats the river. [br] What function are flood plains supposed to fulfill?
选项
A、Expanding populated areas.
B、Acting as a natural safety valve.
C、Attracting more development.
D、Closing off some levees.
答案
B
解析
推理判断题。本题考查冲积平原本身具有的功能。定位句后半句的定语从句修饰前面的floodplains,由定语从句可知,这些冲积平原原本可以充当一道自然屏障,保护人们不受洪水的侵害,故B)“发挥自然安全阀门的作用”为答案。A)“扩大人口密集地区”和原文意思不符,故排除;C)“吸引更多开发”是人们建造堤坝的部分原因,文中已进行了批驳,故排除;D)“阻塞一些堤坝”与原文不符,故排除。
转载请注明原文地址:https://tihaiku.com/zcyy/3430750.html
相关试题推荐
Allaroundtheworldmillionsofpeopleareeagerlywaitingforthe16thof
Allaroundtheworldmillionsofpeopleareeagerlywaitingforthe16thof
Allaroundtheworldmillionsofpeopleareeagerlywaitingforthe16thof
Allaroundtheworldmillionsofpeopleareeagerlywaitingforthe16thof
Allaroundtheworldmillionsofpeopleareeagerlywaitingforthe16thof
Allaroundtheworldmillionsofpeopleareeagerlywaitingforthe16thof
[originaltext]Peoplewhoaremarriedorincommittedrelationshipsareheal
[originaltext]Peoplehavealwaystriedtounderstandwhycertainthingshap
[originaltext]Peoplehavealwaystriedtounderstandwhycertainthingshap
[originaltext]Peoplehavealwaystriedtounderstandwhycertainthingshap
随机试题
FormanyyearsitwascommonintheUnitedStatestoassociateChineseAmeri
英国人的矜持和美国人的张扬体现在文学作品中。通过分析过去一个世纪英语书籍的数字化文本,可以得出这样的结论:【T1】自20世纪80年代以来,美国书籍中传达
"ThewomancleaningthefloorisTom’smother"hasallthefollowingpossibleme
Morewoodwasremovedfromforestsin2005thaneverbefore,oneofmanytr
男性,56岁,患严重腹膜炎,胸闷,气急,体检有胸腔积液。积液检查结果为:蛋白质1
应用数据库的主要目的是()A.解决数据保密问题 B.解决数据完整性问题
感冒应首先辨别的是A.虚实 B.风寒、风热 C.普通、时行 D.气虚、阴虚
九年义务教育完成率的计算公式是()。A.普通中学初中毕业生数/小学一年级招生数×
Afteralonganddifficultstrike,thepl
依据《通用安装工程工程量计算规范》(GB50856—2013)的规定,项目编码
最新回复
(
0
)