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
A、The author is optimistic. B、The author is pessimistic. C、The author is aggressive. D、The author is ambitious. A文中最后一句提到" there
A、The author is optimistic. B、The author is pessimistic. C、The author is aggressive. D、The author is ambitious. A文中最后一句提到" there
admin
2013-01-22
61
问题
Many scientists today are convinced that life exists elsewhere in the universe. Life probably much like that on our own planet. As far as astronomers can determine, the entire universe is built of the same matter. (26) They have no reason to doubt that matter obeys the same laws in every part of the universe. Therefore, it is reasonable to guess that other stars, with their own planets, were born in the same way as our own solar system. What we know of life on earth suggests that life will arise wherever the proper conditions exist.
If we suppose that every star in the universe has a family of planets, then how many planets might support life? (27)First, eliminate those stars that are not like our sun. Next. eliminate most of their planets; they are either too far from or too close to their suns. Then eliminate all those planets which are not the same size and weight as the earth. Finally, remember that the proper conditions do not necessarily mean that life actually does exist on a planet. It may not have begun yet, or it may have already died out.
This process of elimination seems to leave very few planets on which earthlike life might be found. However. even if life could exist on only one planet in a million, (28) there are so many billions of planets that this would still leave a vast number on which life could exist.
选项
A、The author is optimistic.
B、The author is pessimistic.
C、The author is aggressive.
D、The author is ambitious.
答案
A
解析
文中最后一句提到" there are so many billions of planets that this would still leave a vast number on which life could exist"..还有无数的星球为生命的存在提供可能。所以作者的态度仍然是乐观的,故正确答案为A。
转载请注明原文地址:https://kaotiyun.com/show/6BI7777K
0
大学英语六级
相关试题推荐
Thetwomenare__________foralongtimeonaccountofdifferentpoliticalviews.
DaVinciwassobusywithhisnumerousinventionsthathe_______foundenoughtimetocompletehispaintings.
A、He’stootalkativetobeaboss.B、Hedoesn’tsupporttheprogramatall.C、Heshouldn’tshowsupportonlyinwords.D、He’sgo
A、Ithasthemostaggressivepolicies.B、Ithasthehappieststudents.C、Itisaveryexpensiveprivateschool.D、Itislocated
A、Theyhaveanarrowrangeoftopicstodiscuss.B、Theybringupthemostimportantissue.C、Theyhaveinterestingtopicstodis
StudentswhoenteredlotteriesandwonspotsinNewYorkCitycharterschoolsperformedbetteronstateexamsthanstudentswho
Theideathat"parentsdon’tmatter"—shorthandfortheviewthathowparentstreattheirchildrenhasnoeffectonthekids’be
FactorsforStressandAnxietyAtsomepointintheirlivesvirtuallyeveryonewillexperiencestressfuleventsorsituation
Advertisementsappeareverywhereinmodernsociety.Therearemanywaystoadvertiseandadscomeindifferentforms.Newspapers
Scientistshavecomeupwithatheoryforwhytimeflieswhenyonarehavingfunanddragswhenyouarebored.Scanshavesh
随机试题
对于急性肺水肿患儿吸氧时,湿化瓶内装乙醇的浓度是
长期胃肠外营养的患者置管的部位是
老年人心理健康主要测量的是
肾病综合征用糖皮质激素治疗原则( )。
韩某原户籍所在地为甲地,半年前将户口迁往乙地,后韩某因故未落户,因违反买卖合同约定未交付货物被起诉。合同约定于丙地交付,原告住所地为丁地,本案的管辖法院()。
(2010年)已知质点沿半径为40cm的圆周运动,其运动规律为:s=20t(s以cm计,t以s计)。若t=1s,则点的速度与加速度的大小为()。
下列IPv6地址5FE0:0:0:0601:BC:0:0:05D7的简化表示,错误的是()。
Recentlythecarfactoryhadtocarryoutpersonnel______becauseoffinancialtrouble.
WhenyoutalkaboutChinaandIndia’sseeminglyunstoppablegrowth,nobody’ssurprised.Afterall,theincreasingeconomicstren
A、Togetinformationonone-wayticketstoCanada.B、Toinquireaboutthepriceof"SuperSaver"seats.C、Togetadviceonhowt
最新回复
(
0
)