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. Colossal computer-controlled mirrors, thousands o
Computers may one day turn night into day—with good old, natural sunlight. Colossal computer-controlled mirrors, thousands o
admin
2014-04-23
43
问题
Computers may one day turn night into day—with good old, natural sunlight.
Colossal computer-controlled mirrors, thousands of feet across, may one day orbit the earth, reflecting sunlight onto a darkened United States.
Some scientists say that 16 of these mirrors, each about a half mile across, could aim their reflected light at one area on the earth that was about 200 miles by 300 miles. That much light would equal about 56 moons.
The mirrors would be so high that they could catch the sun’s light as it was shining on the other side of the earth. The mirrors could orbit—thousands of miles high—at the same speed as the earth turns on its axis. That way, the mirrors would always be over the same spot. The aluminium-coated, plastic mirrors could be folded up and packed into a spaceship, according to the scientists. Once released a few hundred miles in space, the mirrors, powered by a solar-powered engine, could make the rest of the trip into space on their own.
The scientists 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 spread slowly westward, Chicago, for example, then San Francisco could be lit up. The reflected sunlight would allow these cities to save up electricity. And in emergencies, such as power-failures, the mirrors could light up the affected area.
What no one knows yet is what effect this artificial daytime would have on plants, animals, and humans. Would it confuse some animals and harm plants that are used to regular day-night cycles? The scientists recommend that studies be done to find out what bad effects there might be.
The writer of this passage______.
选项
A、is in favour of the wide use of the mirrors
B、seems to be much worried about the effect of the mirrors
C、gives an objective account of the mirrors
D、suggests that artificial daylight is harmful to living beings
答案
C
解析
本题问文章的作者对这种反射镜持何态度。根据全文内容和作者的遣词造句,我们可以看出作者是在客观地叙述有关这种巨型反射镜的情况,并未做任何评价。因此,本题的正确答案应是C。
转载请注明原文地址:https://kaotiyun.com/show/v6WO777K
0
在职攻硕英语联考
相关试题推荐
Thestudentsareattractedbythe______ofthesnow-coveredmountainswhentheylookoutofthetrain.
TheinfluenceofthemoralstandardsofthehomeisevidentIfthereisnorecognitionofthedifference【C1】______rightandwron
Contradictorytopopularbelief,recentsurveysshowthatbesideshousewives,manycollegestudentsarealso______tosoapoperas
Thedegreeofeconomicgrowthisan______ofthelevelofliving.
TheMITSloanSchoolofManagementstronglybelievesthatitspurposeistogivestudentsthetoolstheywillneedtobeeffecti
Cyberspace,datasuperhighways,multimedia-forthosewhohaveseenthefuture,thelinkingofcomputers,televisionandtelephon
Lastmonth,thepublicaddresssystematEarl’sCourtsubwaystationinLondonwasorderedtogetthenoisedown.Passengers,it
Evenduringthehorseandcarriagedays,trafficinbigcitieswasoftenheavy.Policeofficershadtobestationedfulltimedi
Thereisnodoubtthatairpollutionisaglobalcrisis:itcausesanannualdeath【C1】______of6.5million.Thatisdoublethet
A、Theymaybeoverweight.B、Theymayearnlessmoney.C、Themaysufferfromseriousdiseases.D、Theymayhavelastingdamagein
随机试题
顿咳痉咳期的治法是
崩漏的主要机理是
胆固醇可转变生成()。
2002年5月28日下午6时,在某市郊区的玉米地里发现一具无名女尸。尸体呈卧状,下身裸露,赤足。尸体前腹部有少量泥土覆盖。距尸体10米远的一块石碑上有血迹,血迹距地面36厘米,呈喷溅状,两条血痕下流,上面附着数根毛发。尸体头部额顶有两个椭圆形孔,两眼眶上方
根据《城市工程管线综合规划规范》的规定,下列关于城市工程管线采用的地下敷设方式的相关规定表述中正确的是()。
企业购入价值3000元的固定资产,误计入“管理费用”账户,其结果会导致当期()。
我国的台湾是以()身份加入世贸组织的。
公安法制工作包括公安机关内部的法律事务和内部执法监督工作以及劳动教养案件审批、行政案件复议、行政诉讼案件审判、办理国家赔偿案件等项工作。()
利用并行处理技术可以缩短计算机的处理时间,所谓并行性是指(48)。可以采用多种措施来提高计算机系统的并行性,它们可分成三类,即(49)。提供专门用途的一类并行处理机(亦称阵列处理机)以(50)方式工作,它适用于(51)。多处理机是目前较高性能计算机的基本结
問題13 右のページは、大学の掲示板にはってあった「アルバイト情報」である。下の問いに対する答えとして最もよいものを、1?2?3?4から
最新回复
(
0
)