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
When Neil Armstrong and Buzz Aldrin returned from the moon, their cargo included nearly fifty pounds of rock and soil, which wer
When Neil Armstrong and Buzz Aldrin returned from the moon, their cargo included nearly fifty pounds of rock and soil, which wer
admin
2022-01-04
44
问题
When Neil Armstrong and Buzz Aldrin returned from the moon, their cargo included nearly fifty pounds of rock and soil, which were packed in an aluminum box with seals designed to maintain the lunar surface’s low-pressure environment. But back at Johnson Space Center, in Houston, scientists discovered that the seals had been【C1】________—by moon dust.
Lunar dust is fine, like a powder,【C2】________it cuts like glass. It’s formed when shooting stars【C3】________on the moon’s surface, heating its rocks and dirt and reducing them to fine particles. Since there’s no wind or water to smooth【C4】________edges, the tiny grains are sharp and uneven, and【C5】________nearly everything.
"The intruding【C6】________of lunar dust represents a more challenging engineering design issue, as well as a【C7】________issue for settlers, than does radiation," wrote Harrison Schmitt, an Apollo 17 astronaut, in his 2006 book, "Return to the Moon." The dust damaged space-suits and ate away layers of moon boots. Over the【C8】________of six Apollo missions, not one rock box【C9】________its vacuum seal. Dust followed the astronauts back into their ships, too. According to Schmitt, it smelled like gunpowder and made breathing【C10】________. No one knows precisely what the extremely small particles do to human lungs.
The dust not only【C11】________the moon’s surface, but floats up to sixty miles【C12】________it—as an outer part of its atmosphere, where particles【C13】________the moon by gravity, but are so thin that they【C14】________collide. In the nineteen-sixties, Surveyor probes filmed a glowing cloud floating just above the lunar surface during sunrise. Later, Apollo 17 astronaut Gene Cernan, while orbiting the moon, recorded a【C15】________phenomenon at the sharp line where lunar day meets night. Cernan【C16】________a series of pictures illustrating the changing【C17】________; streams of particles popped【C18】________the ground and hovered, and the resulting cloud came into sharper focus as the astronauts’ orbiter approached daylight. Since there’s no wind to form and【C19】________the clouds, their origin is something of a mystery. It’s【C20】________that they’re made of dust, but no one fully understands how or why they do their thing.
【C3】
选项
A、hang
B、crash
C、land
D、move
答案
B
解析
本句说明月尘是如何形成的。从后面的伴随状语heating its rocks and dirt…to fine particles(将石块和尘土加热并粉碎成颗粒)推断,流星对月球表面造成了极大冲击,导致这样的后果。B项crash意为“撞击”,符合语义逻辑。A项hang与on搭配后表示“坚持”,语义逻辑不对。C项land和D项move分别表示 “登陆”和“移动”,不能体现出流星和月球间的强烈接触。
转载请注明原文地址:https://kaotiyun.com/show/Voi4777K
0
考研英语二
相关试题推荐
ThewriterwarnsAmericansthat______.Thewritergivestheexampleofbreadtoshowthat______.
JohnDeweybelievedthateducationshouldbeapreparationforlife,thatapersonlearnsbydoing,andthatteachingmust_____
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Nameshavegainedincreasingimportanceinthecompetitiveworldofhighereducation.Ascollegesstriveformarketshare,they
Otherguestsatyesterday’sopening,whichwasbroadcast______bytheradiostation,includedAnneMcintoshandtheMayor.
IfAmericanmedicinewereapatient,hewouldweigh350poundsandbegainingfast.Despitebeingrepeatedlycounseledaboutthe
In1784,fiveyearsbeforehebecamepresidentoftheUnitedStates,GeorgeWashington,52,wasnearlytoothless.Sohehireda
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
InJanuarycommutersvotedBirminghamNewStreetoneofBritain’sworstrailwaystations.Eachdaynearly150,000peoplemoveth
随机试题
PassageThreeInPara.3,whatdoesthephrase"jockeyforposition"mean?
西方政治学发生历史性转折的阶段是()
战略控制的方法
普通型流脑败血症期特征性的表现是( )。
建筑安装工程费按工程造价形成,由()组成。
下列关于股票价值估值的描述,正确的是()。
某公司生产单一产品,每件产品的计划工时为5小时,直接人工的计划每小时工资成本为12元/小时,本月公司直接人工的实际每小时工资成本为13元/小时,实际工时为6小时。根据上述数据计算,本月份单位产品所耗工时变动的影响为()元。
根据支付结算法律制度的规定,一般存款账户的存款人可以办理的事项有()。
下列陈述中,不符合实证主义方法论基本观点的是()。
简述教科书的作用。
最新回复
(
0
)