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
考研
NASA is releasing several images taken by the Hubble Space Telescope, which is the closest yet look at the red planet. Altogethe
NASA is releasing several images taken by the Hubble Space Telescope, which is the closest yet look at the red planet. Altogethe
admin
2012-07-23
50
问题
NASA is releasing several images taken by the Hubble Space Telescope, which is the closest yet look at the red planet. Altogether there are four images, which show the entire planet. Each view shows the planet as it completes one quarter of its daily rotation. In these views the north polar cap is turned toward the Earth and is clearly visible at the top of each picture. The images were taken in the middle of the Martian northern summer, when the polar cap was at its smallest size. During this season the Sun shines continuously on the polar cap. Previous spacecraft observations have shown that this summertime polar cap is composed of water ice, just like Earth’s polar caps.
The Hubble Telescope pictures reveal that great changes have occurred on the surface of Mars in the past 20 years. The Martian surface is ever changing. Some regions that were dark 20 years ago are now bright red; some areas that were bright red are now dark. Winds move sand and dust from region to region, often in huge dust storms. Over long timescales many of the larger bright and dark markings remain stable, but smaller details come and go as they are covered and then uncovered by sand and dust.
What is the characteristic of the Martian surface according to observations over the past 20 years?
选项
A、Remaining stable all the time.
B、Appearing bright red.
C、Looking dark most of the time.
D、Changing from bright to dark or vice versa.
答案
D
解析
见第2段第3句(Some regions that were dark 20 years ago are now bright red;some areas that were bright red are now dark.)。
转载请注明原文地址:https://kaotiyun.com/show/G6ii777K
本试题收录于:
GCT工程硕士(英语)题库专业硕士分类
0
GCT工程硕士(英语)
专业硕士
相关试题推荐
Longafterthe1998WorldCupwaswon,disappointedfanswerestillcursingthedisputedrefereeing(裁判)decisionsthatdeniedvi
Ihaveheardbothteachersandstudents______wellofhim.
WhatisthetypicalscenefoundinthecampusofWesleyanUniversity?Whatisthepolicyadoptedbymanyschoolsafterheatedd
IfonlyI______thebooksonthereadinglistbeforeIattendedthelecture.
Althoughheroesmaycomefromdifferentcultures,they______.GandhiandMartinLutherKingaretypicalexamplesofoutstandin
Itisessentialforapolicemantobetrainedincriminallaw______.______couldbeasuitabletitleforthepassage.
Thegirlwon’thaveherlunchbeforeshe______herhomework.
NASAisreleasingseveralimagestakenbytheHubbleSpaceTelescope,whichistheclosestyetlookattheredplanet.Altogethe
Wefindsuchshrubs______willbeststandupto(抵御)hardweather.
Stephen:Iwanttosendthispackageparcelpost,registered.Clerk:______?Stephen:Yes,please,forsixtydollars.
随机试题
资本家在不延长工作日的情况下通过提高劳动生产率获得的是()
赵某因涉嫌故意伤害罪被提起公诉,人民法院决定适用简易程序,赵某不懂何谓简易程序,遂向律师咨询。下述律师对有关简易程序的说法正确的有?()
黄某(17周岁,某汽车修理店职工)与吴某(16周岁,高中学生)在餐馆就餐时因琐事与赵某(16周岁,高中学生)发生争吵,并殴打赵某致其轻伤。检察院审查后,综合案件情况,拟对黄某作出附条件不起诉决定,对吴某作出不起诉决定。(2014年卷二94~96题)关于
“六个必须”原则中“必须提高自主创新能力”主要指()。
信用证的受益人以原证为担保品,要求银行以第三人为受益人另开立的一张与原证内容相似的信用证不是()。
除国家禁止、限制进出口货物、技术外的其他货物、技术,均属于自由进出口范围。基于监测进出口情况的需要,国家对部分属于自由进出口的技术实行自动进出口许可管理,对自由进出口的货物实行技术进出口合同登记管理。
阅读下面材料,回答问题。李华是一个十分聪明的学生,他的最大缺点就是贪玩,学习不用功。每次考试他都有侥幸心理,希望能够靠运气过关。这次期末考试他考得不理想,他认为这次是自己的运气太差了。请运用韦纳的归因理论来分析:如不正确,正确的归因
若有以下程序intf(inta[],intn){if(n>1){intt;t=f(a,n-1);returnt>a[n-1]?t:a[n-1];}elsereturn
Personswhoareoverweightshouldwatchtheirdietcarefullyinordertolosepounds.Thebestwaytodothisistostartaweig
PASSAGETWOAccordingtoDr.Olfson,whatfactorsmayinfluencethetreatmentfordepression?
最新回复
(
0
)