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
36
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.
【C14】
选项
A、frequently
B、violently
C、gently
D、rarely
答案
D
解析
从句中的so thin(如此稀薄)可以推断,这些微粒数量很少,所以它们撞击的几率应该也很小。D项rarely“很少地”符合语义逻辑。A项frequently意为“频繁地”,微粒数量稀少,不会频繁地相撞,不符合语义逻辑。B项violently和C项gently分别表示“猛烈地”和“轻轻地”,从微粒的稀薄程度无法判断它们撞击的力度。
转载请注明原文地址:https://kaotiyun.com/show/Woi4777K
0
考研英语二
相关试题推荐
WhentheAmericaneconomywasrunningfulltilttwoyearsago,fewplaceswereasbreathlesslydelightedasSeattle.Itsportwa
ThewriterwarnsAmericansthat______.Accordingtothepassage,ithaslongbeenbelievedthat______.
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Nameshavegainedincreasingimportanceinthecompetitiveworldofhighereducation.Ascollegesstriveformarketshare,they
IfAmericanmedicinewereapatient,hewouldweigh350poundsandbegainingfast.Despitebeingrepeatedlycounseledaboutthe
LouisArmstrongsang,"Whenyou’resmiling,thewholeworldsmileswithyou."Romanticseverywheremaybesurprisedtolearntha
InJanuarycommutersvotedBirminghamNewStreetoneofBritain’sworstrailwaystations.Eachdaynearly150,000peoplemoveth
随机试题
规律具有的两个特点是
颞下颌关节结构紊乱性疾病在X线上主要表现为关节间隙的改变。()
男,55岁。全口牙龈红肿数月。检查:全口牙龈中度红肿,质软。牙周探针深度4~6mm,X线片显示全口牙槽骨吸收至根长的1/3~1/2,患者既往体健,无服药史。患者可能的诊断是()
下列关于LOF的阐述中,错误的是()。
甲公司成立五年来,利用创业者的人脉关系,企业规模得到迅速发展。但该创业者也愈发感觉到面临竞争时企业有些力不从心。经过向咨询公司请教,得出的结论是该企业缺乏核心竞争力。对于该企业而言,能够帮助创业者识别企业核心能力的方法包括()。
下列()不属于社区发展模式的缺点。
晏紫只有初中学历,又没有什么特别技能,自去年从某小型公司离职后至今仍处于失业状态,生活困难,导致其情绪非常低落。社会工作者赵蓝打算为其提供服务,她可以开展的工作是()
《国家中长期教育改革和发展规划纲要(2010--2020年)》提出把促进教育公平作为国家基本教育政策,教育公平的关键是()。
设f(x)是以T为周期的连续函数(若下式中用到f’(x),则设f’(x)存在),则以下4个结论,不正确的是()
Whatarethespeakerstalkingabout?
最新回复
(
0
)