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
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.
【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.【
Overthecourseofmanyyears,withoutmakinganygreatfussaboutit,theauthoritiesinNewYorkdisabledmostofthecontrol
Thinnerisn’talwaysbetter.Anumberofstudieshave【C1】________thatnormal-weightpeopleareinfactathigherriskofsomedi
Thinnerisn’talwaysbetter.Anumberofstudieshave【C1】________thatnormal-weightpeopleareinfactathigherriskofsomedi
Happypeopleworkdifferently.They’remoreproductive,morecreative,andwillingtotakegreaterrisks.Andnewresearchsugge
Happypeopleworkdifferently.They’remoreproductive,morecreative,andwillingtotakegreaterrisks.Andnewresearchsugge
EnrollmentinLosAngelespublicschoolsisexpectedtoplungebynearly30%overthenextdecade,leadingtotoughchoicesahea
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
随机试题
女性,38岁,右乳头和乳晕皮肤发红变硬、轻度糜烂,病变与周围界限清楚:乳头表面覆盖有黄褐色鳞屑状痴皮,轻按右侧乳房可见乳头有浆液性液体溢出。双侧乳房内未及肿物,双腋窝未及肿大淋巴结。为明确诊断应安排以下哪一项检查
隔墙的种类很多,按其构造方式可以分为()。
票据出票日期使用小写填写的,银行可予以受理,但由此造成损失的,由出票人自行承担。()
产品责任保险的被保险人可以是产品的( )。Ⅰ.制造者Ⅱ.设计者Ⅲ.修理者Ⅳ.销售者
重点调查虽然只选择其中一部分重点单位进行调查,但仍能够反映出总体的基本情况。()
下列各项中,属于业务预算的有()。
全陪的离站服务是为本站的送站和下站的接站顺利衔接做好准备,主要服务有()
下列有关我国疫情防控的说法错误的是:
南宋著名的书院有江西庐山的()和湖南长沙的()等。
Itissimpleenoughtosaythatsincebookshaveclasses:fiction,biography,poetry—weshouldseparatethemandtakefrom
最新回复
(
0
)