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
73
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.
【C7】
选项
A、intelligence
B、health
C、fund
D、future
答案
B
解析
空格处的名词短语与前面的a more challenging engineering design issue并列,表明的都是月尘可能造成的影响。该段后半部分谈到了月尘对宇航员装备的影响,最后也谈到了宇航员吸入月尘后可能对肺带来影响。前者对应design issue,后者谈论health issue。因此选B项。A项intelligence“智力”、C项fund“基金”和D项future“未来”这三个情况在下文中都没有涉及,没有依据表明月尘对其的影响。
转载请注明原文地址:https://kaotiyun.com/show/3oi4777K
0
考研英语二
相关试题推荐
ThewriterwarnsAmericansthat______.Accordingtothepassage,ithaslongbeenbelievedthat______.
JohnDeweybelievedthateducationshouldbeapreparationforlife,thatapersonlearnsbydoing,andthatteachingmust_____
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Otherguestsatyesterday’sopening,whichwasbroadcast______bytheradiostation,includedAnneMcintoshandtheMayor.
IfAmericanmedicinewereapatient,hewouldweigh350poundsandbegainingfast.Despitebeingrepeatedlycounseledaboutthe
LouisArmstrongsang,"Whenyou’resmiling,thewholeworldsmileswithyou."Romanticseverywheremaybesurprisedtolearntha
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
InJanuarycommutersvotedBirminghamNewStreetoneofBritain’sworstrailwaystations.Eachdaynearly150,000peoplemoveth
随机试题
高尔基的自传体三部曲包括【】
根据《职代会条例》和《企业法》的规定,职工代表大会行使下列五项职权:(1)_________;(2)_________;(3)_________;(4)_________;(5)_________。
关于医用X线机的分类,以下说法错误的是
梁丘穴在髂前上棘与髌骨底外缘连线上。髌骨外上缘上
CB/T19000—2000族标准建立或更新完善质量管理体系的程序,通常包括( )。
为保证所有的产品销售均已入账,戊公司下列控制活动中与这一控制目标直接相关的有()。
1981年6月,中共十一届六中全会通过《关于建国以来党的若干历史问题的决议》,标志着思想上拨乱反正的胜利完成,其核心问题是()。
某商品的进价是1000元,原价1500元,商店要求利润率不低于5%,可按原价打折出售。问售货员最多可以打几折出售此商品?
在数据库三级模式间引入二级映象的主要作用是
下列关于软件设计基本原理的叙述中错误的是
最新回复
(
0
)