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
The atmosphere is all the air surrounding the earth. Without it, we would be forced to seek shelter from the sun, as there would
The atmosphere is all the air surrounding the earth. Without it, we would be forced to seek shelter from the sun, as there would
admin
2008-11-13
46
问题
The atmosphere is all the air surrounding the earth. Without it, we would be forced to seek shelter from the sun, as there would be no atmosphere to protect us from the sun’s deadly rays.
Large and powerful, the atmosphere consists of an ocean of gases hundreds of miles high. It presses down on our bodies with a force of more than fourteen pounds per square inch. The narrow column of air which rests upon our shoulders weighs almost 2000 pounds. But our bodies are built in such a way that this weight does not crush(压碎)us.
In this huge ocean of air there is more energy than in all the coal, oil, and gas we have on earth. Electrical energy is collected in the atmosphere as water is collected and stored in a dam. The existence of electricity in the air has been known for centuries. But a thorough study of electricity in the atmosphere was not possible until the development of radio and radar.
One scientist, Dr. Sydney Chapman, has tried to explain the electric field which surrounds the earth. He believes that great storms on the sun create large mounts of electric energy. This energy is contained in a very light gas called hydrogen. The earth pulls the gas toward it, and a ring is formed around the earth several thousand feet above its surface. The great space ring is a powerful current of electrical energy. Sometimes the ring comes down and curves into the lower atmosphere, causing strange electrical effects.
His idea explains many things. It has long been known that there is an electric field inside the earth. It moves in much the same manner as the electric energy contained in the atmosphere. Scientists now believe that the electric energy in the atmosphere causes the electric energy inside the earth to flow.
If we can learn to control the energy in the atmosphere, we will have an unending supply of energy. Many scientists are trying to learn how to control it. In the meantime, even those of us who are not scientists have begun to pay attention to air. We realize that air does not contain the same elements that it contained years age. Automobiles, airplanes, factories, and atomic explosions have added dust and waste gases to the atmosphere, It is time to learn how to protect our atmosphere, the roof over the world of man.
选项
A、the total amount of oxygen over the earth
B、mixture of gases surrounding the earth
C、a source of storms
D、the diffusion of waste gas
答案
B
解析
综合第一和第二段首句可得出本题答案。
转载请注明原文地址:https://kaotiyun.com/show/KYPO777K
0
成人本科学位英语
相关试题推荐
OnesillyquestionIsimplycannottolerateis"Howdoyoufeel?"Usuallythequestionisaskedofamaninaction—amanwalking
Beingagoodparentishardernowthanithaseverbeenbefore.Inpressurisedmodernlives,demandstobeafulfilledindividua
Forcenturies,explorershaveriskedtheirlivesventuringintotheunknownforreasonsthatweretovaryingdegreeseconomican
InternetpiracyreferstotheuseoftheInternetforillegallycopyingordistributingunauthorizedsoftware.Inthesecasesth
Apartfrompersonalpreferences,socialcontextalsoaffectsbothdirectlyandindirectlythemediaandthemediacontenttowhi
The"upsanddowns"(Para.1)ofa2year-oldrefersto______.Accordingtothepassage,whenatoddlerisanangel(Para.4),he
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
______thefirstsentence,theeditorrefusedtopublishthearticle.
Justasthesoilisapartoftheearth,______theatmosphere.
MostconsumersinChina’scitieswouldrather"suffersilently"overgrievancesthanstandupfortheirrights,asurveyshowed
随机试题
影响肌力的因素不包括
1岁患儿,母乳喂养,未加辅食,约2个月前发现患儿活动少,不哭、不笑,面色蜡黄,表情呆滞,手及下肢颤抖检查发现肝、脾增大,血红细胞1×1012/L,血红蛋白50g/L。对该患儿下列处理哪项是错误的()。
利率期货卖出套期保值适用的情形主要有()。
下列各项中,属于纳税人工资、薪金所得项目的有()。
参观游览开始,旅游团队在由饭店前往景点途中,地陪首先应介绍的内容是()。
佛教、伊斯兰教传入中国的时间分别是()。
阅读下面材料,回答问题。某教师准备在全市上一节观摩课,课题是《新中国成立》。他的教学设计是在该课的结尾让学生齐唱《我爱你,中国》,并让学生讨论如何努力学习,将来报效祖国。教师在设计意图中这样写道:“通过齐唱歌曲《我爱你,中国》,对学生进行爱国主义
文化名人的隐退,有两种境界:一是被迫隐退,二是自觉隐退。自觉隐退的人,要么有审时度势、急流勇退的____________,要么有超身世外、看轻名利的____________,不论是哪一种情况,都是值得敬佩的。填入画横线部分最恰当的一项是:
在俄国社会主义革命取得胜利的初期,特别是实行新经济政策期间,列宁对苏维埃俄国如何建设社会主义进行过深刻的理论思考,提出许多精辟的论述,具体有()
邓小平曾经指出:马克思主义必须是同中国实际相结合的马克思主义,社会主义必须是切合中国实际的有中国特色的社会主义。这句话的含义是()
最新回复
(
0
)