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
58
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
YougotaletterrequestinginformationfromAndreaPhilips,themarketingmanagerofLinguaServicesLtd.
HereisaletterwhichcomplainsaboutthequalityoftheTVsetboughtinastore.Readtheletterandcompletethegiveninfor
HereisanadvertisementaboutaBusinessBookClub.Readtheadvertisementandcompletethegiveninformationform.Wri
HereisanadvertisementaboutaBusinessBookClub.Readtheadvertisementandcompletethegiveninformationform.Wri
Readthefollowingpassageandanswerquestions9-18.1.Peoplehavebeenpaintingpicturesforatleast30,000years.Theearli
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Readthefollowingpassageandanswerquestions9-18.1.Mostyoungpeopleenjoysomeformsofphysicalactivity.Itmaybewalk
Inthe1920s,demandforAmericanfarmproductsfell,asEuropeancountriesbegantorecoverfromWorldWarIandinstitutedaus
1.AccordingtotheWallStreetJournal,"Moreandmoreshoppersarebypassinghouseholdnamesforthecheaper,no-nameproducts
UNDERTHECITYSTREETSWhileskyscraperofficesandelegantapartmentblocksremainthepublicfaceofmostmajorcities,t
随机试题
智力的差异表现在团体与团体之间最为明显的是【】
县级以上人民政府统计机构在调查统计违法行为或者核查统计数据时,有权采取的措施有()。
风险价值VAR的估算方法包括以下哪些选项()。Ⅰ.参数法Ⅱ.蒙特卡洛模拟法Ⅲ.现金流折现法Ⅳ.历史模拟法
某企业债务的账面价值为3000万元,权益资本成本为10%,永续的税前利润为700万元,适用的所得税税率为25%。按照公司价值分析法,该企业的价值为()万元。
有限责任公司某股东欲转让出资,于2006年2月15日发出书面转让通知,股东张某2006年3月1日收到该转让通知,张某需要在()之前对该转让事项进行答复,否则视为同意转让。
旅游团在旅游期间遇到安全事故,导游员应首先()。
“峰三千”“水八百”、树木种属繁多是()的总特色。
旅客收益管理和货物收益管理的区别在于()。
对于一个信息系统,BSP方法的基本要求是,向企业所提供的信息应该是()。
数据独立性是数据库技术的重要特点之一,所谓数据独立性是指
最新回复
(
0
)