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
38
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.
【C13】
选项
A、are attracted to
B、are bound to
C、are confronted with
D、are charmed with
答案
B
解析
从句讨论月球的引力对月尘微粒(participles)的作用。星体的重力对其表面或附近的物体有引力。这些微粒在月球的附近,应是受到了引力的影响而聚集在一起。B项are bound to有“受……约束”之意,符合此处的语境。A项are attracted to“被吸引到”和D项are charmed with“被……迷住”主要指人在感情上的吸引。C项are confronted with“面临”,月球引力与微粒不是对立的关系。
转载请注明原文地址:https://kaotiyun.com/show/Poi4777K
0
考研英语二
相关试题推荐
WhentheAmericaneconomywasrunningfulltilttwoyearsago,fewplaceswereasbreathlesslydelightedasSeattle.Itsportwa
YouhavejustcomebackfromtheU.S.asamemberofaSino-Americanculturalexchangeprogram.WritealettertoyourAmerican
ManyAmericansregardthejurysystemasaconcreteexpressionofcrucialdemocraticvalues,includingtheprinciplesthatallc
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
Otherguestsatyesterday’sopening,whichwasbroadcast______bytheradiostation,includedAnneMcintoshandtheMayor.
LouisArmstrongsang,"Whenyou’resmiling,thewholeworldsmileswithyou."Romanticseverywheremaybesurprisedtolearntha
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
InJanuarycommutersvotedBirminghamNewStreetoneofBritain’sworstrailwaystations.Eachdaynearly150,000peoplemoveth
随机试题
责任校对的主要工作职责包括()等。
等离子弧切割割炬的喷嘴采用具有良好导热性的紫铜制成。
下列关于生殖道沙眼衣原体感染的知识,错误的是
常用于分离水溶性生物碱的方法是
【2006年第34题】如图3-106所示结构,支座1处的弯矩为下列何值?
若z=F(x,y)和y=φ(x)均可微,则等于:
在建设工程项目的质量控制当中,事前质量预控要求预先针对质量控制对象的某些方面进行周密分析,其中不包括()。
缺口管理是用于管理()。
在非结构参与式观察研究中,最适宜采用的记录方法是()。[江苏大学2015研;统考2010研]
近视与阅读的复杂关系近视是一种颇为神秘的现象,科学家们还不能确切地说出造成近视的原因。有关的遗传学研究表明,在近视比较严重的家族里,近视确实能够遗传,可是谁都搞不清楚内在的原因。最近,美国眼科医生道格拉斯.弗雷德里克又重新提出丹麦眼科医生恩斯特.戈
最新回复
(
0
)