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
专升本
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
2017-09-04
57
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 (轴). That way, the mirrors would always be over the same spot.
The aluminum-coated (涂铝的) , plastic mirrors could be folded up and packed into a space-ship, 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 (倾斜) 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 west-ward, 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、gives an objective account of the mirrors
B、seems to be much worried about the effect of the mirrors
C、is in favor of the wide use of mirrors
D、suggests that artificial daylight is harmful to living beings
答案
A
解析
通读全文可知,文章的中心词是mirror,前面几段说它给人带来的便利,最后一段又说明科学家正在研究它可能的不利影响。由此可见作者的观点是比较客观的陈述。因此正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/nliC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
Manypeoplecatchacoldinthespringtimeand/orfall.Itmakesuswonder...ifscientistscansendamantothemoon,whyca
Manypeoplecatchacoldinthespringtimeand/orfall.Itmakesuswonder...ifscientistscansendamantothemoon,whyca
Nooneistrulygreatbuthewhoservesthepeopleheartandsoul.
Workingonanewspaperisaverybusyjob.Manynewspapers【21】eachday,andtheyhaveto【22】peoplewithallthelatestnews.The
Workingonanewspaperisaverybusyjob.Manynewspapers【21】eachday,andtheyhaveto【22】peoplewithallthelatestnews.The
Workingonanewspaperisaverybusyjob.Manynewspapers【21】eachday,andtheyhaveto【22】peoplewithallthelatestnews.The
FrankLloydWrightprobablyisthegreatestarchitectthattheUnitedStateshaseverproduced.Hewasvery【21】andhadanatural
FrankLloydWrightprobablyisthegreatestarchitectthattheUnitedStateshaseverproduced.Hewasvery【21】andhadanatural
FrankLloydWrightprobablyisthegreatestarchitectthattheUnitedStateshaseverproduced.Hewasvery【21】andhadanatural
随机试题
肱骨外科颈骨折可损伤
周期性瘫痪临床上不应有的表现为
A、 B、 C、 D、 E、 C十二经脉的交接规律:相为表里的阴经与阳经在四肢末端交接;同名手足阳经在头面交接;足手阴经在胸部交接。
“松涛声,海涛声,声声相应。天上月,水中月,月月齐明”赞美的是四川著名的天气景观()。
李大爷今年78岁,是革命伤残军人,没有子女,一直以来都是老伴照顾他的生活。老伴的心脏病很严重,随着年龄的增长,经常会犯病,而每次犯病后,李大爷不但要自己料理生活,还要照顾生病的老伴,这对于残疾的李大爷来说是一项挑战。李大爷为了不给社区添麻烦,也没有向社区寻
享受春雨①也许是刚经历了冬天太多的郁闷和压抑,也许是寒风、残雪在记忆的底片上留下太多的沧桑与悲凉,万物掐灭生命的色彩与声音,孤独地萧条着沉默着。一夜微风,唤醒早春三月的晨曦,也吹来了北方第一场春雨。山川、河流、乡村、房屋、树林、花草、庄稼、庄稼人
党的政治路线要紧紧围绕党的建设来制定。()
[*]
以下关于IPv6的论述中,正确的是___________。
Self-Reliance,byRalphWaldoEmerson,hasinfluencedthewayIviewtheworldandmyself.Thisworkhashadaprofoundeffecto
最新回复
(
0
)