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
2023-01-24
75
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.
【C10】
选项
A、even
B、fast
C、difficult
D、comfortable
答案
C
解析
本句提到月尘闻起来像火药(it smelled like gunpowder),火药的味道一般是很浓并让人呼吸不畅。C项difficult “困难的”,代入后指呼吸困难。A项even、B项fast和D项comfortable分别表示“均匀的”、“快速的”和“舒服的”,闻起来像火药的月尘不会使人呼吸均匀或舒服,也不会使呼吸加快。
转载请注明原文地址:https://kaotiyun.com/show/PJMD777K
0
考研英语二
相关试题推荐
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Skepticsofhighereducationoftencomplainthatuniversitiesoffertoomanyboringdegreeswithlittlevalueintheworkplace.【
Scientistssentpatternsofelectricitycoursingacrosspeople’sbrains,coaxingtheirbrainstoseelettersthatweren’tthere.
Thinnerisn’talwaysbetter.Anumberofstudieshave【C1】________thatnormal-weightpeopleareinfactathigherriskofsomedi
Happypeopleworkdifferently.They’remoreproductive,morecreative,andwillingtotakegreaterrisks.Andnewresearchsugge
Happypeopleworkdifferently.They’remoreproductive,morecreative,andwillingtotakegreaterrisks.Andnewresearchsugge
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
随机试题
禽类特有的免疫器官是()
A.实证B.虚证C.虚实夹杂D.真虚假实证E.真实假虚证邪气亢盛,正气不虚,其形成的病证是
A、冠心苏合丸B、人参再造丸C、通心络胶囊D、消栓胶囊E、元胡止痛片某女,82岁,中风半年有余,症见口眼歪斜、半身不遂、手足麻木、疼痛、拘挛、言语不清。证属气虚血瘀、风痰阻络。宜选用的成药是
某公司董事长由上一级单位总经理张某兼任,张某长期在外地,不负责该公司日常工作。该公司总经理安某在国外脱产学习,期间日常工作由常务副总经理徐某负责,分管安全生产工作的副总经理姚某协助其工作。根据安全生产法有关规定,此期间对该公司的安全生产工作全面负责的人是(
一般半刚性基层的力学性能都是在饱水()后的力学特征,因而也是水稳定性能的反映。
20世纪90年代以来,在中国境内外的“东突”势力为实现建立所谓“东突厥斯坦国”的目的,在新疆策划、组织了一系列恐怖暴力事件,严重危害了中国各族人民群众的生命财产安全和社会稳定。我国政府对此暴力活动坚决予以打击,这体现了我国()的国家职能。①依法打
旅游不文明行为当事人违反刑法的,信息保存期限为()。
下列关于汇率表述正确的是()。
设f(x)一阶连续可导,且f(0)=0,f’(0)≠0,则=____________.
Inthe1997general-electioncampaign,"Education,Education"wasTonyBlair’spetphrase.Timeschangequickly.Educationisgo
最新回复
(
0
)