首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
ITAIPU DAM: Vital statistics Location: Brazil and Paraguay Completion date:【D1】______ Purpose: Hydro-electric power Cost:【D2】___
ITAIPU DAM: Vital statistics Location: Brazil and Paraguay Completion date:【D1】______ Purpose: Hydro-electric power Cost:【D2】___
admin
2019-01-14
28
问题
ITAIPU DAM: Vital statistics
Location: Brazil and Paraguay
Completion date:【D1】______
Purpose: Hydro-electric power
Cost:【D2】______
Type: Gravity
Material:【D3】______
length: 7.8 kilometers
【D4】______: 196 meters
【D5】______: 1. 02 trillion cubic feet
There are two problems caused by the construction of the dam. One is that the water from the dam【D6】______which spread diseases among the people. The other is that the reservoir destroyed the rainforest, which consequently caused the death of【D7】______and other forest creatures.
Question 28 - 30 Label the diagram, and write one word for each blank.
【D2】
In this section, you will hear a short passage. For questions 21 -30, complete the notes using three words or fewer each blank. The passage will be read twice. Remember to write the answer on the answer sheet.
Hello and welcome to this, the fourth in our series of public lectures on Big Buildings. Today we’re going to take a look at the Itaipu Dam in South America. You may not know too much about Itaipu but it’ s been named one of the "Seven Wonders of the Modern World" by the American Society of Civil Engineers. And in this lecture, I hope to explain some of the reason why.
Ok, let’s begin with a few facts. First of all, where exactly is the Itaipu Dam? Well, it’ s on the Parana River, close to the border between Brazil and Paraguay. Construction began in 1975 and the dam was only finished in 1982. Two years later it started generating electricity and its now one of the largest hydro-electric power plants in the world. The total cost of the building was 20 billion dollars.
In design, it’s what is called a gravity dam, which means it relies on its immense weight for stability. The main section is made of concrete actually 15 times the amount of concrete that was used in creating the Channel Tunnel between England and France. To give you an idea of size, the dam is 7. 8 kilometers long, with a height of 196 meters. The reservoir behind the dam is huge—almost fifteen hundred square kilometers and the reservoir capacity is 1. 02 trillion cubic feet. The dam really is an amazing feat of engineering. Engineers actually had to change the course of the Parana, which is the seventh largest river in the world, and move 50 million tons of earth and rock in the process?
With any success story, I suppose there are bound to be a few problems. One is that the Itaipu Dam sometimes gets blocked with mud and silt, which is expensive to clear. But more seriously, this mud and silt carries bacteria, which can be transmitted in the water and cause illness in the people who use it. The other main problem was that when the land was originally flooded to create the reservoir, they destroyed a large area of rainforest, which was home to many birds and other forest creatures and sadly they died. Since then, however, seven new protected areas have been created for wildlife.
Ok, now let’s look at the construction of the dam. Can you see the point at the very bottom of the dam on the upstream face? That’s called the heel, just like part of your foot. And at the same point at the bottom of the downstream face of the dam is called the toe, also like the toe on your foot. On the top of the dam, that’s the part you can see above the water, the "crest" , and the base or ground on which the dam is built is the " foundation". I think that’s all you need to know for now.
选项
答案
$20 billion
解析
(录音中指出该大坝的建造总费用为200万美元,“The total cost of the building was 20billion dollars”。)
转载请注明原文地址:https://kaotiyun.com/show/cL8K777K
本试题收录于:
B类竞赛(英语专业本科专科)题库大学生英语竞赛(NECCS)分类
0
B类竞赛(英语专业本科专科)
大学生英语竞赛(NECCS)
相关试题推荐
Almosteverynewinnovationgoesthroughtherephases.Wheninitiallyintroducingintothemarket,theprocessofadoptionissl
WomenareaforceforchangeinAustraliansociety.TheprideofplacegiventomenasalmostthesoleshapersofAustralianhis
inventeffectcommunicateexplorecircleRadioisn’toutofdate,andalotofpeoplelistentoiteveryday.Marconi,theI
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.Earlyinthe1900smostAmeri
Therelationshipbetweenprofessionalsportsclubsandtheirplayersisperhapsunlikeanyotheremployer-employee【C1】______in
Newtechnologylinkstheworldasneverbefore.Ourplanethasshrunk.It’snowa"globalvillage"wherecountriesareonlyseco
Thereisarealpossibilitythattheseanimalscouldbefrightened,______asuddenloudnoise.
Birdsarewarmbloodedanimals.Thoughtheirfeathershelptokeepthemwarm,somebirdssuchasducks,【C1】______(goose),ands
AccordingtotheBBC,theorangecolourationiscausedbyfineparticlesofsandbeingliftedfromtheSaharaintotheatmosph
Placeinthemiddleboxanumberlargerthan1.Ifthenumberisthecorrectone,alltheothernumberscanbedividedbyitwit
随机试题
2型糖尿病的发病机制是:()
胆固醇的逆转运主要通过哪些酶(或蛋白)的共同作用完成
患者,女性,65岁。因自觉食欲明显增加半年前来就诊。自觉“长胖很多”。经有关检查示:C肽释放试验结果为空腹580pmol/L,l小时1120pmol/L,2小时1650pmol/L,3小时866pmol/L;糖化血红蛋白11%;24小时尿C肽为18.4μg
按照《会计档案管理办法》的规定,下列说法中不正确的是()。
李刚2017年7月份与某房地产企业签订合同,合同约定李刚以135万元的优惠价格购买市场价值147万元的门面房,但2017年8月1日至2018年7月31日期间,李刚须将该门面房无偿提供给房地产企业对外出租使用。假定不考虑其他相关税费,则李刚2017年上述业务
ABC会计师事务所负责审计甲公司2011年度财务报表,在制定应收账款的审计计划时,注册会计师遇到下列事项,请代为做出正确的专业判断。A注册会计师针对甲公司应收账款的下列明细项目最不可能确定为函证对象的是()。
下列各项程序中,通常用作风险评估程序的有()。
旅游设施
处于前运算阶段的儿童具有()的特征。
It’sfairlywellknownthatabaddiet,alackofexercise,andgeneticscanallcontributetotype2diabetes.Butanewglobal
最新回复
(
0
)