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
Back in July 1965, the Mariner Four Space Probe transmitted the first close-up pictures of Mars and convinced many people that M
Back in July 1965, the Mariner Four Space Probe transmitted the first close-up pictures of Mars and convinced many people that M
admin
2010-02-22
59
问题
Back in July 1965, the Mariner Four Space Probe transmitted the first close-up pictures of Mars and convinced many people that Mars was as dead as our own moon. Two later space probes seemed to confirm this.
But then, in 1971, Mariner Nine raise hopes once again that there could be life on the planet—or at least that life might once have existed there. The range of experiments to be conducted were designed by mission scientists such as Chuck Klein:
"It was like shooting blind, so to speak, to be trying to devise experiments to look for evidence of life. And we decide to try to use an instrument which could incorporate many different assumptions about what Martian biology might be like—what the bugs might be like or not like. But the fundamental proposition in each portion of our experiment was to look, over a period of time, for evidence of some process going on which we could attribute to biology."
The scientists controlled the Viking experiments from a distance of almost 100 million kilometers. Cameras took pictures of the area a round the robot landers—in case anything moved into view. No aliens were spotted by the cameras, but other experiments seems to show signs of life.
"Almost everything that we planned began to give us data of some kind—that is to say, it wasn’t like everything was dead. For many weeks, we were goaded by the media, who were terribly excited—they were constantly looking for a headline, you know. They Found Life! They Found Life! Every bit of information that we came up with was squeezed by them to try to put a positive twist on it. We really had to work very hard to maintain our cool and present the data just the way we saw it."
But these apparent signs of life were deceptive. By repeating the experiments and double checking the results, the scientists eventually came to the conclusion that the whole planet was dead and would, in fact, be deadly to living organisms.
Since 1976, there have been no further visits. A probe sent by NASA exploded before reaching the planet last year and it now doesn’t look as if there’ll be another Mars visit until the end of the decade.
When we do get back there, will we find something new? And what about us? Could we ever live on Mars? This isn’t as strange an idea as it sounds according to astronomer Patrick Moorer.
"It’s fair to say that, from a technical point of view, we could put men on Mars within the next few decades. Whether we actually do so or not depends very much more upon politics and finance than upon sheer science, but I think it could be done. And I’m quite prepared to believe that by this time in the next century, there will be flourishing colonies upon Mars."
选项
A、We were carrying on experiments aimlessly.
B、It was impossible to reach the Mars because of the distance.
C、We could see nothing in the outer space.
D、We didn’t believe life really existed on Mars.
答案
A
解析
本题为语义题。问以下哪句和"It was shooting blind...to look for evidence of life"意思最为接近。注意"it was shooting blind"意为像盲目射击一样,因此该句的意思为试图设置各种实验寻找生命的证据就像盲目射击一样。答案选项与该意基本一致,故为正确选项。
转载请注明原文地址:https://kaotiyun.com/show/0944777K
0
考研英语一
相关试题推荐
Asimpleideasupportsscience:"trust,butverify".Resultsshouldalwaysbe【C1】________tochallengefromexperiment.Thatsimp
Iftheonlineserviceisfreethenyouaretheproduct,technicianssay.GoogleandFacebookmakea【C1】________collectingperson
Iftheonlineserviceisfreethenyouaretheproduct,technicianssay.GoogleandFacebookmakea【C1】________collectingperson
Collegestudentsaremorestressedoutthaneverbefore—atleastaccordingtothelatestfindingsofalarge,nationalsurveyth
IsStanfordstillauniversity?TheWailStreetJournalrecentlyreportedthatmorethanadozenstudentshaveleftschooltowo
Imagineaworldinwhichweareassignedanumberthatindicateshowinfluentialweare.Thisnumberwouldhelpdetermine【C1】___
Imagineaworldinwhichweareassignedanumberthatindicateshowinfluentialweare.Thisnumberwouldhelpdetermine【C1】___
Writeanessaybasedonthefollowingchart.Inyourwriting,youshould1)interpretthechart,and2)giveyourcomments.You
Ifyou’relikemostpeople,youmaythinkyoucankeepawayfromadvertising.Youskipnewspaperads,neverclickonadsonthe
ThethirdsentenceofParagraph1impliesthat______.InParagraph5",thepowerless"probablyrefersto______.
随机试题
当事人之间就新技术、新产品、新工艺和新材料及其系统的研究开发订立的合同称为()。
A医院健康教育B倡导政策支持C加强个人素质D营养健康教育E发展个人技能属于健康促进策略的是
患者男,25岁,近1个月反酸、胃灼热,于进食后、平卧时加重,无腹胀及腹痛,无黑粪。正常食管内的pH是
镰刀型红细胞贫血的基因突变属于
PM10是指悬浮在空气中,空气动力学当量直径()的颗粒物。
下列关于我国古代叫法的表述,不正确的是()。
“人逢喜事精神爽”说的是一种()。
蒙太奇是电影创作的主要叙述手段和表现手段之一。电影将一系列在不同地点,从不同距离和角度,以不同方法拍摄的镜头排列组合起来,叙述情节,刻画人物。但当不同的镜头组接在一起时,往往又会产生各个镜头单独存在时所不具有的含义。根据上述定义,下列各项中没有使用蒙太奇手
若服务器系统年停机时间为10分钟,那么系统可用性至少达到
Therearesomestepsyoucantaketoavoidcatchingacold.Contrarytopopularbelief,coldsarenotcausedbyexposuretoseve
最新回复
(
0
)