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
Computers may one day turn night into day—with good old, natural sunlight. Giant computer-controlled mirrors, thousands of f
Computers may one day turn night into day—with good old, natural sunlight. Giant computer-controlled mirrors, thousands of f
admin
2005-11-28
99
问题
Computers may one day turn night into day—with good old, natural sunlight.
Giant computer-controlled mirrors, thousands of feet across,【C1】______one day orbit the earth, 【C2】______sunlight onto a darkened United States.
Two scientists【C3】______NASA(National Aeronautics and Space Administration)say that 16 of these mirrors, 【C4】______ about a half mile wide, could【C5】______their reflected light at one area on earth【C6】______was about 200 miles【C7】______300 miles. That much light would equal【C8】______56 moons.
The mirror would be【C9】______high that they could【C10】______the sun’s light【C11】______the sun was shining on the【C12】______ side of the Earth. The mirrors would【C13】______thousands of miles high【C14】______the same speed as the Earth spins. That way, the mirrors【C15】______ always be over the same spot.
The aluminum-coated, plastic mirrors could be【C16】______ up and packed into a【C17】_____shuttle, according to the scientists, John Allen and John Canady. 【C18】______released a few hundred miles in【C19】______, the mirrors, powered【C20】______a solar-powered engine, could make the rest of the trip into space on their own.
Allen and Canady say that the computer-controlled mirrors could also be made to tilt slowly, so the reflected sunlight would sweep slowly along the surface of the Earth. For example, as night fell, the mirrors could be tilted to light up Boston. Later on as darkness crept slowly westward, Chicago, for example, then San Francisco could be lit up. The reflected sunlight would allow these cities to conserve electricity. And in emergencies, such as power-failures or disasters, the mirrors could light up the affected areas.
【C4】
选项
答案
each
解析
转载请注明原文地址:https://kaotiyun.com/show/vLIO777K
0
考博英语
相关试题推荐
Lookatthestatementsbelowandthecommentsoffourexpertsonasurveyaboutcoachingontheoppositepage.Whichexpert’
Readthetextbelowaboutacompany’sapproachtosocialresponsibility.Inmostofthelines(34-45),thereisoneextrawor
HowtoapproachSpeakingTestPartTwo•Inthispartofthetestyougiveashorttalk(approximatelyoneminute)onabusiness
Thecompanyismostworriedabouthow______.Employeesshouldanswerthephoneafter______.
HowtoapproachListeningTestPartTwo•ThispartoftheListeningTesttestsyourunderstandingofnumbers,namesandspelling
ThemeetingisbeingheldtodiscussWagebillshaveincreasedbecause
TipsforRunning/AttendingBusinessConferenceABringnecessarymaterialssuchasanotepadandapenBC
Itisstrictly______thataccesstoconfidentialdocumentsisdeniedtoallbutafew.
Theprivatedetective,havingreceivednewinformationfromaconfidentialsource,narroweddownthe______ofhisenquiryinto
Whatabadtemperthechildhas!Iwonderwhichofhisparentshe______.
随机试题
患儿,女,7岁,4天来眼睑水肿,每天尿量不足400ml。肉眼血尿、血压高。以急性肾炎收入院。家长询问患儿何时可以上学,正确的指导是
5岁男孩,浮肿7天,体检有高度浮肿,血压120/80mmHg,尿蛋白(+++),24小时尿蛋白定量2500mg,尿沉渣RBC2~3/HP,BUN5.4mmol/L。最可能的诊断是
A、血容量不足B、心功能不全,血容量正常C、心功能不全或血容量相对过多D、容量血管过度E、心功能不全或血容量不足中心静脉压高,血压低是由于
MACD指标出现顶背离时应()
风险收益率的大小与风险有关,风险越大,风险收益率一定越大。()
理论上,下列债券中票面利率最低的应该是()。
熬药吴克诚所谓的药大都是些亡去很久的草。长得正好的草是不配叫药的,即使硬放进药屉里,不久它也会烂掉,因为它未经晒、烘、焙或炒一——九九八十一劫。少了一劫,也不能成药。
作为历史创造者的人民群众,下列表述中正确的是()。
旅行社刚刚为三位旅客预定了飞机票。这三位旅客是荷兰人比尔、加拿大人伯托和英国人丹皮。他们三人一个去荷兰、一个去加拿大、一个去英国。据悉,比尔不打算去荷兰,丹皮不打算去英国,伯托既不去加拿大也不去英国。所以( )。
Morecanbelearnedaboutaculturefromastudyofarthistorythangeneralhistorybecause______.Itcanbeconcludedfromt
最新回复
(
0
)