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
72
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
Airpollutionkilledaboutsevenmillionpeoplelastyear,makingittheworld’ssinglebiggestenvironmentalhealthrisk,theW
Iftheonlineserviceisfreethenyouaretheproduct,technicianssay.GoogleandFacebookmakea【C1】________collectingperson
Iftheonlineserviceisfreethenyouaretheproduct,technicianssay.GoogleandFacebookmakea【C1】________collectingperson
Collegestudentsaremorestressedoutthaneverbefore—atleastaccordingtothelatestfindingsofalarge,nationalsurveyth
IsStanfordstillauniversity?TheWailStreetJournalrecentlyreportedthatmorethanadozenstudentshaveleftschooltowo
Bettingagainstanindustrywithaddictsforcustomerscarriesobviousrisks.【C1】________theseareuncertaintimesforBigTobac
Bettingagainstanindustrywithaddictsforcustomerscarriesobviousrisks.【C1】________theseareuncertaintimesforBigTobac
[A]ThePossibilitytoIncreaseYourGutMicrobiota[B]Scientist’sOpinionTowardstheFoodValue[C]TheIndispensabl
[A]ThePossibilitytoIncreaseYourGutMicrobiota[B]Scientist’sOpinionTowardstheFoodValue[C]TheIndispensabl
Let’ssayyou’reworkingtowardagoal.Maybeit’stocutoutjunkfood,budgetbetterorstoplookingatyourphonesomuch.Ch
随机试题
某女性患者,患有胆囊炎以下哪个部位有明显触痛()
在确立系统实施目标中发挥着主导作用的是()
女性,35岁。人工流产后出现双手指关节疼3个月,伴晨僵约1小时左右,对症用中药治疗效果不佳。查体双手第1、2掌指关节(MCP),2~4近端指间关节(PIP)肿胀,压痛明显,X线示关节间隙正常,双手骨质疏松,可见小囊性破坏样改变。下列哪项指标最有利于判断
中度妊娠高血压综合征患者首选的处理措施是
《危险化学品安全管理条例》规定,生产危险化学品的,应在危险化学品的包装内附有危险化学品完全一致的化学品()。
签发审计报告前的审计工作底稿的复核,一般由主任会计师负责,是对整套工作底稿进行()
下列各项中,不属于现行房产税税率的是()。
某国有独资公司拟改制为国有资本控股公司,涉及重新安置企业职工。对此,下列说法错误的是()。
《齐民要术》是关于()。
玉米的正常市场价格为每公斤1.86元到2.18元,近期某地玉米价格涨至每公斤2.68元。经测算,向市场每投放储备玉米100吨,每公斤玉米价格可下降0.05元。为稳定玉米价格,向该地投放储备玉米的数量不能超过()。
最新回复
(
0
)