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
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
2012-08-22
32
问题
For centuries, explorers have risked their lives venturing into the unknown for reasons that were to varying degrees economic and nationalistic (国家主义的). 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 U. S. had acquired when it purchased Louisiana, and the Appolo 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 simply 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 growing emphasis on international cooperation in large space ventures, it is clear that imperatives (需要, 必要) 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 experiments that only humans 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.
By saying "With Mars the scientific stakes are arguably higher than they have ever been" (Line 1, Para. 4), the author means that______.
选项
A、with Mars the risks involved are much greater than any previous space ventures
B、in the case of Mars, the rewards of scientific exploration can be very high
C、in the case of Mars, much more research funds are needed than ever before
D、with Mars, scientists argue, the fundamental interests of science are at issue
答案
B
解析
关键词理解题。stake在英语中有“回报;奖金”的意思。这句话是第四段的主题句,后面讲到证明火星上有生命存在或存在过,可以让我们了解生命起源所需的条件。如果进一步证明火星上的生命是独立产生的话,那么就可以揭开一个谜,即“宇宙中是否普遍存在生命”。由此可以看出,火星探索在科学上的回报可能是非常大的,可以帮助我们了解很多基础的东西。所以选B。第四段并非讲火星探索的危险,所以A项不对。
转载请注明原文地址:https://kaotiyun.com/show/TFXO777K
0
在职攻硕英语联考
相关试题推荐
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
Wright,acomputerscientist,isplottinganexperimentwithahumanoidrobotcalledNao.Heandhiscolleaguesplantointroduc
Starvationprobablydoesn’tsoundlikeakeytolivingwellintooldage.Butasstrangeasitseems,calorierestriction,done
Adolescentsaretakinglongertobecomefullyproductivemembersofsociety,ReedLarson,professorofhumandevelopment,Univer
Bartendersarerarelyshyaboutofferinganopinion.ButonarecenteveningattheFinboroughWineCafe,inbetweenpoursofBe
Thewritingofahistoricalsynthesisinvolvesintegratingthematerialsavailabletothehistorianintoacomprehensiblewhole.
Thelanguagebarriermadecommunicationdifficult,butfinally,partofmymessage______.
DoyouthinkthatourlifeisbeinggreatlychangedbyWeChatdevelopedbyChina’sInternetgiantTencent?Writeanessayofaro
TheInternetisaglobalnetworkthatconnectsothercomputernetworks,togetherwithsoftwareandprotocolsforcontrollingthe
随机试题
“从物到感觉和思想”的认识路线是
乳腺癌可转移到
A.Cl′-N1糖苷键B.Cl′-N9糖苷键C.3′,5′-磷酸二酯键D.氢键E.肽键嘧啶核苷的糖苷键是
甲公司与乙公司签订服装买卖合同,约定甲公司于3月10日交付服装1000套,乙公司于3月15日支付货款10万元。3月10日,甲公司仅交付服装900套,乙公司此时因濒临破产致函甲公司表示无力履行合同。根据合同法律制度的规定,下列表述中,正确的是()。
所谓承运人的赔偿责任限制,是指承运人对每一件或每一货损单位负责赔偿的()。对此,各国的法律和承运人的提单上都有明确规定,有的按照海牙规则,有的按照内国法。
根据以下资料,回答111-115题2008年末,上海市百强企业集团年末资产总计28121.41亿元,比上年增长6.9%;从业人员123.39万,下降2.3%。全年完成营业收入15328.40亿元,增长7.9%;实现利润总额821.22亿元,下降40.5%
将考生文件夹下MUNLO文件夹中的的文件KUB.DOCX删除。
Inthe1950s,thepioneersofartificialintelligence(AI)predictedthat,bytheendofthiscentury,computerswouldbeconver
Manyteachersbelievethattheresponsibilitiesforlearningliewiththestudent.【C1】______alongreadingassignmentisgiven,
Tomisimmenselycuriousabouteverythingandaseagertofindtheanswersasifhe________dealingwiththesubjectforthefir
最新回复
(
0
)