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
55
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
Whichofthefollowingistrue,accordingtothewriter?FindingabargainontheInternetwasgettingeasierpartlybecause___
In1998consumerscouldpurchasevirtuallyanythingovertheInternet.Books,compactdiscs,andevenstockswereavailablefrom
Thestrongwindwithsandcomesfromthe______hillinfrontoftheirhouse.
He______themeeting,butuponlearningthattheywoulddiscusssomethingirrelevanttohisfieldofstudy,hedroppedtheidea.
Itisknownfromthefirstparagraphthat______Accordingtotheauthor,whichofthefollowingpeopleusuallyleadanewfashi
Thepopulationexplosionwillleadto______.Manyfarmersinrichcountriesmovedtocitiesinthe19thcenturybecauseof__
Ourgovernmentstronglyholdstheprinciplewewill______bethefirsttousenuclearweapons.
Long-termuseofthedrugcan______thepatient’spersonality.
ThecurrentFrenchbestsellerlistsarewonderfullyeclectic.In【51】,thereisevery-thing【52】blockbusterthrillerstoCatherine
Heatisalwaysbeingtransferredinonewayoranother,______thereisanydifferenceintemperature.
随机试题
政党的特征。
中心静脉压高而动脉压在正常范围,反映
以上属于副粘病毒感染的疾病是以上儿童患者有自愈倾向的为
下列计算公式,错误的是()。
某公司由于目前的信用政策过程过严.不利于扩大销售,同时收账费用过高,该公司准备修正现行的信用政策。现有甲、乙两个备选方案,有关数据见下表。要求:在不考虑所得税的影响时,应否改变现行的信用政策?如果要改变,应选择哪个方案?
情感态度与价值观是现代科学素养的一个重要组成部分,对学生的发展起着关键作用。以下不属于情感的是()。
使用动态存储器件的存储电路必须有(43)。
数据库设计包括两个方面的设计内容,它们是______。
WhathasGeorgesuggested?
BilingualeducationiscontroversialintheUnitedStates.【C1】______,agrowingbodyofresearchshowsthat【C2】______speakingt
最新回复
(
0
)