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
2015-12-31
66
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/x9PO777K
0
在职攻硕英语联考
相关试题推荐
Youaretowriteinnolessthan120wordsaboutthetitle"ShouldEducationGotoMarket?"Youshouldbaseyourcompositionon
Althoughherefusedtoactonmysuggestion,hehadtoadmitthat______whatIsaid.
Americanstodayhavedifferenteatinghabitsthaninthepast.Thereisawideselectionoffoodavailable.Theyhaveabroader
ThecurrentFrenchbestsellerlistsarewonderfullyeclectic.In【51】,thereisevery-thing【52】blockbusterthrillerstoCatherine
Antsfirstcapturedtheattentionofsoftwareengineersintheearly1990s.Asingleantcannotdomuchonitsown,butagroup
AchainofshopsinEastYorkshire,Englandhasbeentoldthatitwouldbeacriminaloffencetosellthousandsoftubesoftoot
Whethertheeyesare"thewindowsofthesoul"isdebatable!thattheyareintenselyimportantininterpersonalcommunicationis
Whethertheeyesare"thewindowsofthesoul"isdebatable!thattheyareintenselyimportantininterpersonalcommunicationis
Somedaytherewillbearobotthattakesthedrudgery(苦工,单调沉闷的工作)outofhousework—andevencleanswindows,buthowsoonsuch
随机试题
前置胎盘妊娠合并糖尿病
治疗脾虚湿盛的水肿,宜选用
不属于非处方药的是
窦性心动过速心电图特征为:窦性P波规律出现,频率为
中位数是把修正出的各价格按()排列,当项数为奇数时,位于正中间位置的那个价格为综合出的一个价格,当项数为偶数时,位于正中间位置的那两个价格的简单算术平均数为综合出的一个价格。
下列国民经济和社会发展规划的发展目标中,不属于经济目标的是()。
多跨桥梁的桥梁基础由于受到专业设备数量的限制,不宜配备多台,因此只能采取( )。
货币工资和实际工资的差别取决于()。
当企业经常对外销售半成品时,不宜采用平行结转分步法。()
若某改进型VGA的图像分辨率为800×600,256 种颜色,它的显存容量(即刷新存储器容量)至少是( )。
最新回复
(
0
)