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
A sweeping review of NASA’s human spaceflight program has concluded that the agency has an unsustainable and unsafe strategy tha
A sweeping review of NASA’s human spaceflight program has concluded that the agency has an unsustainable and unsafe strategy tha
admin
2019-06-10
49
问题
A sweeping review of NASA’s human spaceflight program has concluded that the agency has an unsustainable and unsafe strategy that will prevent the United States from achieving a human landing on Mars in the foreseeable future.
The 286-page National Research Council (NRC) report, says that to continue on the present course under budgets that don’t keep pace with inflation " is to invite failure, disillusionment, and the loss of the longstanding international perception that human spaceflight is something the United States does best.
A major argument against returning to the moon was that it didn’t pencil out — that there wasn’t nearly enough money dedicated to the program. If the goal is a human landing on Mars, the current strategy won’t work.
" Absent a very fundamental change in the nation’s way of doing business, it is not realistic to believe that we can achieve the consensus goal of reaching Mars," Mitch Daniels, the former Indiana governor and co-chair of the committee, said Wednesday morning in an interview.
A 2009 committee appointed by Obama urged NASA to keep its options open while investing in spaceflight technology and letting the commercial sector handle routine trips to low Earth orbit. But the NRC reviewers argue that NASA and its international partners should focus on the "horizon goal" of Mars and do whatever it takes to get there, step by step, avoiding changes in strategic direction.
NASA officials, aware that critics see the agency as adrift, say they have already been moving in the direction advocated by the NRC. Their strategy targets Mars, just as the NRC report now demands, they say. " All this work will eventually enable astronaut missions to Mars," NASA Administrator Charles Bolden said in a recent NASA white paper.
"NASA’s been doing some work, and has been doing some thinking over the last six months, that is in alignment with what the NRC says the top-level goals are," said Greg Williams, a NASA deputy associate administrator.
But Williams was cool to the suggestion of a return to the moon, saying the airless moon offers little help in developing the kind of descent and landing techniques needed on Mars, which has a thin, troublesome atmosphere.
The NRC committee probed the philosophical question of why we send people into space to begin with. The committee concluded that the purely practical, economic benefits of human spaceflight do not justify the costs but that the aspirational nature of the endeavor may make it worth the effort.
A 2009 committee appointed by Obama argued that NASA should______.
选项
A、become more commercialized
B、pay more attention to low-Earth-orbit projects
C、become more realistic with its strategies
D、make more efforts in different space programs
答案
D
解析
本题是细节题,要求考生理解第五段第一句的语义。关键点:...urged NASA to keep its options open while investing…and letting…,这说明在不同的空间项目可以采取不同的方案。
转载请注明原文地址:https://kaotiyun.com/show/bMUO777K
0
考博英语
相关试题推荐
AccordingtoBT’sfuturologist,IanPearson,theseareamongthedevelopmentsscheduledforthefirstfewdecadesofthenewmil
【M1】______Applicationfilesarepiledhighlythismonthincollegesacrossthecountry.【M2】______Admissionsofficersareporing
Asstudentsreturntoschoolthisfall,parentswillagainworryaboutnewillnessesaskidscomeintocontactwithflugerms.T
Whilestillcatching-uptomeninsomespheresofmodernlife,womenappeartobewayaheadinatleastoneundesirablecategory
Theweatherwasn’tfavorableandbothteamshadto______icyrainandastrongwindduringthematch.
She’scute,noquestion.Symmetricalfeatures,flawlessskin,lookstobe22yearsold—enteringanymeat-marketbar,awomanl
Thenuclearageinwhichthehumanraceisliving,andmaysoonbedying,beganforthegeneralpublicwiththedroppingofana
ManycountrieswillnotallowcigaretteadvertisingintheirnewspapersoronTVespeciallysincetheadvertisementsareusually
Thelawyercouldnot______anyconvincingevidence.
Tomostofus,nuclearisanall-or-nothingword.Nuclearwarisunthinkable.Nuclearweaponsmustneverbeused.Nuclearpower
随机试题
Weareinterestedintheweatherbecauseit【21】ussodirectly—whatwewear,【22】wedo,andevenhowwefeel.Geographers,however
一职工从沿海某城市归来,腹泻1天,十余次,水样便,到市医院求治,疑为肠炎,后大便培养出E1-For型细菌。诊断后11小时医师上报疫情,国家要求上报此类传染病最迟不超过
招标人与中标人签订合同后()个工作日内,向未中标的投标人和中标人退还投标保证金。
目前使用广泛的对企业信用分析的5Ps系统考察的因素包括()。
下列各项中,属于国务院计量行政部门制定的各种全国性的单项计量管理办法和技术规范的有()。
旅行社不得向旅游者介绍和提供含有()内容等旅游项目。
阅读下列材料并回答问题。材料:下面是某教师讲授中国近代史的教学片段。教师让学生观察分析图片及文字,然后提出如下问题:(1)《时局图》中的怪兽指谁?(英、俄、日、德等列强)(2)他们摇旗呐喊表现了什么?(觊觎
()是通过摆事实、讲道理,来达到帮助学生提高认识、形成正确观点的日的的一种方法。
这幅画中有几处看来是闲笔,实际上却是___________之处。填入画横线部分最恰当的一项是:
Itwasalreadyseveno’clockwhenDavidlefthome.David______homeuntilseveno’clock.
最新回复
(
0
)