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
It seems to shine unchangingly, pouring out a constant light year after year. But the sun may not be nearly so stable as we supp
It seems to shine unchangingly, pouring out a constant light year after year. But the sun may not be nearly so stable as we supp
admin
2012-08-05
48
问题
It seems to shine unchangingly, pouring out a constant light year after year. But the sun may not be nearly so stable as we suppose, It is now thought to move quickly and irregularly and change in long-term cycles, growing dimmer and then brighter with each passing year. Some even fear that its frequent changing behavior would have a great influence on the Earth’s climate.
The source of the sun’s inconstancy is magnetism. Professor William Livingston has developed new theories about its magnetic nature.
"We don’t yet know what causes sun spots, "he says, "but we now think they’re areas of high-level magnetism that come up from the sun’s interior. So strong is their magnetic pull that the highly ionized gas nearby is not able to transmit energy out." As a result these areas send out less heat and light and thus appear from Earth to be almost dark irregular surface patches.
Sun spot activity generally fluctuates in steady, 11-year cycled. Scientists have long formed the opinion that as the size and number of sun spots increased, the overall energy sent out by the sun would decrease. Indeed, recent studies confirmed it, revealing that during peak periods of sun spot activity, the Earth experiences a small drop that can be seen clearly in received solar energy.
Could such a small drop in energy have an effect here on earth? Perhaps some scientists think the world temperature could fall by as much as 0.2 during periods of high solar magnetism... enough to cause significant fluctuations in weather patterns.
Which of following is the best title for the passage? ______
选项
A、Fluctuations in Weather Patterns.
B、Magnetism and the Sun Spots.
C、The Size and Number about the Earth’s.
D、Livingston’s New Theory about the Earth’s Climate.
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/P6eC777K
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
Aresomepeoplebornclever,andothersbornstupid?Orisintelligencedevelopedbyourenvironmentandexperience?Strangelye
Theprofessorandwriter_____comingtomakeareportonChineseliterature.
DuringthewholeTVinterview,themiddle-schoolgirlstudentneveroncelookedme
TheelephantIsawinthezooate_____allthethingsthevisitorsgaveit.
Whethershelikestheplayornotisamatterofher______preferenceWhichofthefollowingcannotbeputintheblank?
Ihavenodoubt_____weshallbeabletodosomethingforyou.
Itisnaturalthatyoungpeopleareoftenuncomfortablewhentheyarewiththeirparents.Theysaythat【61】parentsdon’t【62】them
FromMondayuntilFridaymostpeoplearebusyworkingorstudying,butintheeveningsandonweekendstheyarefreeandenjoy
Allthings______,herpaperisofgreatvalue.
"Cool"isawordwithmanymeanings.Itsoldmeaningisusedtoexpressatemperaturethatisalittlebitcold.Astheworldh
随机试题
(2021年聊城东昌府区)班杜拉认为,一个人通过观察他人的行为及其强化结果,可以习得某些新的反应,或使他已经具有的某种行为反应特征得到矫正。同时他认为观察学习是由注意过程、保持过程、产出过程、动机过程四个相互关联的子过程组成。“以表象或言语的形式将示范活动
汽车行驶时,为了防止电解液溢出,应将其加液孔封闭。()
尖牙窝上附着的肌肉是
下列哪些说法不符合《消费者权益保护法》的规定?
村民甲带领乙、丙等人,与造纸厂协商污染赔偿问题。因对提出的赔偿方案不满,甲、乙、丙等人阻止生产,将工人李某打伤。公安局接该厂厂长举报,经调查后决定对甲拘留15日、乙拘留5日,对其他人未作处罚。甲向法院提起行政诉讼,法院受理。下列哪些人员不能成为本案的第三人
人月费单价法是目前国际上较广泛采用的一种工程咨询费用的估算方法。不是组成估算费用的有()等部分组成。
在等腰三角形、平行四边形、椭圆和抛物线四个图形中,是中心对称图形的有()。
"Howdidyoudoit,Dad?Howhaveyoumanagedtonottakeadrinkforalmost20years?"Ittookmealmost20yearstohavethe【C1
思想领导是指党在政治方向、政治路线、政治原则和方针、政策上的领导。()
ChooseTWOletters,A-E.WhichTWOtopicsaboutchimpanzeeswillthestudentsdiscussnextweek?ATheyareslowerthanhumanin
最新回复
(
0
)