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
1. For some years, there has been a plan to solve the water shortage problem by moving huge icebergs halfway round the world — f
1. For some years, there has been a plan to solve the water shortage problem by moving huge icebergs halfway round the world — f
admin
2017-04-21
84
问题
1. For some years, there has been a plan to solve the water shortage problem by moving huge icebergs halfway round the world — from the Antarctic Ocean to arid region such as the north of Mexico, California, Arabia or parts of Africa. The plan has never been implemented, however, because of the great cost involved in using giant tugboats to move the icebergs.
2. The solution to this problem of cost would be to make self-propelled icebergs, thus removing the need for ships and expensive fuel. The iceberg would be its own tugboat. This is how it would work: liquid freon is pumped under high pressure into heat exchangers submerged in the water. As the freon leaves the iceberg(temperature: 32°F)and comes into contact with the water(temperature: 50°F~52°F), it turns into gas and expands rapidly. As it does so, it turns turbines which drive the propellers. The freon is then returned to the iceberg where it liquefies and goes through the process again.
3. The plan is then as follows. A ship would sail to the Antarctic and select an iceberg 2 miles wide, 5 miles long and about 1,000 feet thick. A crew of 40 to 50 people would then bring the iceberg to where it is needed. They would live in special quarters, heated by solar energy.
Helicopters would bring equipment, supplies and food. When the "engine" was in place, the iceberg would travel at about one and a half knots, although in a favorable current, it would move two or three times as fast. The Humboldt Current, for example, off the coast of South America could bring icebergs from the Antarctic to the coast of Mexico or California.
4. The next problem is what to do with it when it arrives at its destination. Lying off the coast of some dry area, the iceberg would be enclosed in an enormous plastic cocoon, open on the top and the bottom but enclosing all the sides. This would prevent the iceberg from floating away and also enables the fresh water to be piped off the top as it melts. The iceberg would take about a year to melt.
5. The cost of this operation is estimated at about $65 million for the first iceberg and $15 million for subsequent ones because the equipment can be used again. The operation is therefore worth considering because a 2 miles by 5 miles by 1,000 feet iceberg holds a trillion gallons of water, worth about $200 million at today’s prices.
Questions 1-5
Directions: For questions 1-5, choose the best title for each paragraph from below. For each numbered paragraph(1-5), mark one letter(A-G)on your Answer Sheet. Do not mark any letter twice.
A. The assumption of self-propelled iceberg
B. The treatment of icebergs off the coast
C. The plan of moving icebergs
D. The problem of water shortage
E. The process of moving icebergs
F. The cost of moving icebergs
G. The problem of moving icebergs
Paragraph 5 ______
选项
答案
F
解析
第5段介绍了移动冰川的费用。
转载请注明原文地址:https://kaotiyun.com/show/SC9d777K
本试题收录于:
BFT阅读题库国际化人才外语考试(BFT)分类
0
BFT阅读
国际化人才外语考试(BFT)
相关试题推荐
HereisanadvertisementaboutaBusinessBookClub.Readtheadvertisementandcompletethegiveninformationform.Wri
Agreatnumberofpeoplethinkthatthosewithuniversityeducationshouldgethigherpaythanthosewithout,fortheybelievet
YougotaletterrequestinginformationfromAndrewPhilips,themarketingmanagerofLinguaServicesLtd.
HereisanadvertisementaboutforacertainpositioninthenewspaperofDec.7,2005.Readtheadvertisementandcompletethe
Readthefollowingpassageandanswerquestions9-18.1.Peoplehavebeenpaintingpicturesforatleast30,000years.Theearli
Imagineaworldwithoutbrands.【R1】______Noraucousadvertising,nouglybillboards,andnoMcDonald’s.Yet,givenachanceand
Inthelate1960’s,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc
Whenwespeakofabasichumanneed,wemeansomethingwhichisnecessarytolife,somethingthatwecannotpossiblydowithout.
UNDERTHECITYSTREETSWhileskyscraperofficesandelegantapartmentblocksremainthepublicfaceofmostmajorcities,t
随机试题
Tobefrank,I’dratheryou______inthecase.
宋以前大量药学资料主要因何书引用而得以保存下来
工人就业前职业健康检查目的是
颈部内脏格内有
预防牙周疾病消除咬合创伤需要
上述生物碱的混合物,可用水蒸气蒸馏法分离的是醋酸水浸液用氨水碱化至pH9,乙醚萃取,乙醚层含有的是
工程验收中法人验收包括()。
在考生文件夹下,打开文档word2.docx,按照要求完成下列操作并以该文件名(word2.docx)保存文档。【文档开始】选修课程名称一系选修人数二系选修人数三系选修人数计算方法67
A、Dealingwithreaderswell.B、Answeringstrangequestions.C、Recommendingbookstoreaders.D、Helpingpatronslocatebooks.AJe
A、Sheneedsaquietplace.B、Shelikesmovingaround.C、Shewantsabiggerhouse.D、Shelikesplayingtheviolin.AM:Iheardyo
最新回复
(
0
)