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
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic an
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic an
admin
2014-02-27
28
问题
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic. Columbus went west to look for better trade routes to the Orient and to promote the greater glory of Spain, Lewis and Clark journeyed into the American wilderness to find out what the US had acquired when it purchased Louisiana, and the Apollo astronauts rocketed to the moon in a dramatic show of technological muscle during the cold war.
Although their missions blended commercial and political-military imperatives, the explorers involved all accomplished some significant science by going where no scientists had gone before.
Today Mars looms(隐约出现)as humanity’s next great terra incognita(未探明之地). And with doubtful prospects for a short-term financial return, with the cold war a rapidly fading memory and amid a growing emphasis on international cooperation in large space ventures, it is clear that imperatives other than profits or nationalism will have to compel human beings to leave their tracks on the planet’s reddish surface. Could it be that science, which has long played a minor role in exploration, is at last destined to take a leading role? The question naturally invites a couple of others: Are there experiment that only human could do on Mars? Could those experiments provide insights profound enough to justify the expense of sending people across interplanetary space?
With Mars the scientific stakes are arguably higher than they have ever been. The issue of whether life ever existed on the planet, and whether it persists to this day, has been highlighted by mounting evidence that the Red Planet once had abundant stable, liquid water and by the continuing controversy over suggestions that bacterial fossils rode to Earth on a meteorite(陨石)from Mars. A more conclusive answer about life on Mars, past or present, would give researchers invaluable data about the range of conditions under which a planet can generate the complex chemistry that leads to life. If it could be established that life arose independently on Mars and Earth, the finding would provide the first concrete clues in one of the deepest mysteries in all of science: the prevalence of life in the Universe.
A. bacterial fossils rode to Earth on a meteorite from Mars
B. their explorations were driven by commercial and political-military interests
C. promote the greater glory of Spain
D. demonstrate the powerful development of technology achieved by Americans
E. complex chemistry come into existence which lead to life
F. liquid water existed abundantly on Mars
G. believe that’s a signify commitment
The United States sent Apollo astronauts to the moon in order to______.
选项
答案
D
解析
首先,题干的末尾是in order to,那么在7个选项中,我们就一定要找以动词开头的答案。A,B,E,F可以直接排除。然后就只剩下了C,D,G。通过专有名词Apollo回原文定位,原文的第一段有“the Apollo astronauts rocketed to themoon in a dramatic show of technological muscle during the cold war”。In adramatic show of technological muscle对应选项D中的demonstrate thepowerful development of technology。因此,选D。
转载请注明原文地址:https://kaotiyun.com/show/DTO4777K
0
考研英语一
相关试题推荐
AnunendingflowofprivateandpubliccriticismsuggeststhatthepeopleoftheUnitedStatessuffer【C1】______government,natio
AnunendingflowofprivateandpubliccriticismsuggeststhatthepeopleoftheUnitedStatessuffer【C1】______government,natio
Hekepttheportrait______hecouldseeiteveryday,asitalwaysremindedhimofhisearlyschooldays.
WriteanEnglishcompositionofabout150-200wordsinwhichyoustateyouropinionsaboutthefollowingtopic.Manyuniversity
In1998consumerscouldpurchasevirtuallyanythingovertheInternet.Books,compactdiscs,andevenstockswereavailablefrom
TheAmericaneconomicsystemisorganizedaroundabasicallyprivate-enterprise,market-orientedeconomyinwhichconsumerslarg
Fromthehealthpointofviewwearelivinginamarvelousage.Weareimmunizedfrombirthagainstmanyofthemostdangerousd
ThechurchofLaPlacita,"thelittlesquare",formallycalledNuestraSeoraReinadeLosAngeles,wasfoundedunderSpanishru
Thewillingnessofdoctorsatseveralmajormedicalcenterstoapologize.topatientsforharmfulerrorsisapromisingsteptow
随机试题
在下列小儿原发性肺结核的叙述中哪项不对
在法律、法规规定的范围内,小额贷款公司从银行业金融机构获得融人资金的余额,不得超过其资本净额的()。
精索静脉曲张患者行精索静脉结扎术的指征是
患者,老年男性,长期吸烟史,因咳嗽、痰中带血半年就诊,胸部X线片示右肺门区圆形肿块,右上肺不张,应首先考虑
关于砂当量试验,下列说法正确的是()。
城市空间布局也是城市景观形成的一个重要层面,城市规划不仅要创造良好的生产生活环境,考虑城市空间组织功能的要求,而且应具有优美的形态结构,其具体要求是()。①城市总体布局艺术②城市空间布局要充分体现城市美学③城市空间景观组织④城市轴线艺术
按照现行增值税制度规定,下列行为应“视同销售”征收增值税的有()。
条件充分性判断:A.条件(1)充分,但条件(2)不充分B.条件(2)充分,但条件(1)不充分C.条件(1)和(2)单独都不充分,但条件(1)和(2)联合起来充分D.条件(1)充分,条件(2)也充分E.条件(1)和(2)单独都不充分,条件(1)和(
当n→∞时,数列(1+)n-e是的().
在VisualBasic中,不能关闭的窗口是
最新回复
(
0
)