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
58
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
Globalclimatechange,oftenseenasaprocessstretchingoverthousandsofyears,couldinfactoccurabruptlyandunexpectedly
Intheworldofclimatechange,itisintheEarth’scoldregionswheretrendscanmosteasilybeseen.Thecryosphere,wherewa
Intheworldofclimatechange,itisintheEarth’scoldregionswheretrendscanmosteasilybeseen.Thecryosphere,wherewa
Thefirebrigadearrivedtwohourslaterafterthealarmwassounded,______itwastoolatetosavemuchofthebuilding.
Thetroublewithtelevisionisthatitdiscouragesconcentration.Television’svarietybecomesanarcotic,notastimulus.Itss
AttheKyotoconferenceonglobalwarminginDecember1997,itbecameabundantlyclearhowcomplexithasbecometoworkoutint
Hewouldhavefinishedhisuniversitystudybuthe______toquitandfindajobtosupporthisfamily.
Withthepaceofchangequickening,moreandmorescientistsfindithardtokeepupwiththelatestdevelopmentevenintheiro
Onlythoroughlyunpleasantpeopleleavethe______oftheirpicnicstospoiltheappearanceofthecountryside.
Thefirebrigadearrivedtwohourslaterafterthealarmwassounded,______itwastoolatetosavemuchofthebuilding.
随机试题
川芎在酸枣仁汤中的主要作用是
A.胃癌根治切除术B.胃空肠吻合术C.食管下端和胃近端切除术D.全胃切除术E.放弃作根治术胃体小弯部胃癌已侵犯胃底部应行
下列哪项不是Crohn病常见的临床表现
麦格综合征最常见于()。
建筑水磨石板材是以水泥,石渣和砂为主要原料,经搅拌、成型、养护研磨、抛光等工序制成的,具有强度高,坚固耐久,美观,刷洗方便,不易起尘,较好的防水和耐磨性能,施工简便等优点,特别值得注意的是()。
下列各项经济事项中,体现谨慎性的有()。
根据安德森的研究,影响人际吸引最重要的人格品质是()。
-1,6,-5,20,-27,()
1933年11月,在福州发动抗曰反蒋事变的国民党爱国将领是()。
Accordingtothepolls,whatwillhappentogunshopsinBrazil?
最新回复
(
0
)