首页
登录
职称英语
Computers may one day turn night into day—with good old, natural sunlight.
Computers may one day turn night into day—with good old, natural sunlight.
游客
2025-03-18
0
管理
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. [br] The reflected light would sweep slowly along the surface of the earth because the mirrors
选项
A、would be operated by solar-powered engines
B、could be made to adjust their angles
C、could move around the earth at the same speed as the earth turns on its axis
D、would orbit thousands of miles high to catch the sun’s light
答案
B
解析
本题是一道具体细节题。问反射的太阳光线可以慢慢扫过地球表面的原因是什么。文章第五段指出,科学家们说,计算机控制的镜面还可以缓慢倾斜,使反射的阳光缓慢地沿地球表面扫过。比如,当夜幕降临时,经倾斜的镜面可以照亮波士顿,稍后,随着夜色的逐渐西移,可照亮芝加哥,然后照亮旧金山。因此,本题的正确答案应是B“因为这些反射镜可以调整其倾斜角度”。
转载请注明原文地址:https://tihaiku.com/zcyy/4002912.html
相关试题推荐
Thiscountryisfullycommittedtotheintroductionofcomputersintoschool
Thiscountryisfullycommittedtotheintroductionofcomputersintoschool
Thiscountryisfullycommittedtotheintroductionofcomputersintoschool
Weareallnaturallyattractedtopeoplewithideas,beliefsandinterestsl
Weareallnaturallyattractedtopeoplewithideas,beliefsandinterestsl
Weareallnaturallyattractedtopeoplewithideas,beliefsandinterestsl
Lookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandn
Computersmayonedayturnnightintoday—withgoodold,naturalsunlight.
Computersmayonedayturnnightintoday—withgoodold,naturalsunlight.
Computersmayonedayturnnightintoday—withgoodold,naturalsunlight.
随机试题
Aswellastheproblemsconcernedwithobtaininggoodqualityaudiorecording
[originaltext]Whenyougotoacollegeorhighschoolsportsevent,youcan
(1)Animationisolderthancinema,indeedalmostasoldasphotography.Niep
有关腹部损伤的陈述,错误的是A.需密切观察病人的生命体征 B.重点检查腹部
在10kV跌落式熔断器上桩头有电的情况下,未采取安全措施前,不准在熔断器下桩头(
下面四个图形中,只有一个是由上面的四个图形拼合(只能通过上、下、左、右平移)而成
下边四个图形中,只有一个是由上边的四个图形拼合(只能通过上、下、左、右平移)而成
统计调查制度一经批准或备案即产生法律效力,统计调查应当按照依法批准或者备案的统计
我国证券交易所采用的交易方式为()。A:做市商制B:专家经纪人制C:自助方式
根据税收征收管理法律制度的规定,整个税收征收管理的起点是()。A.办理营业执照
最新回复
(
0
)