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
71
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
JohnDeweybelievedthateducationshouldbeapreparationforlife,thatapersonlearnsbydoing,andthatteachingmust_____
YouhavejustcomebackfromtheU.S.asamemberofaSino-Americanculturalexchangeprogram.WritealettertoyourAmerican
Asia’srealboat-rockerisagrowingChina,notJapan,aseniorAmericaneconomistobserved.Thereissomuchnoisesurround
In1784,fiveyearsbeforehebecamepresidentoftheUnitedStates,GeorgeWashington,52,wasnearlytoothless.Sohehireda
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
Atfirstglancethepatriarchyappearstobethriving.Morethan90%ofpresidentsandprimeministersaremale,asarenearlya
InJanuarycommutersvotedBirminghamNewStreetoneofBritain’sworstrailwaystations.Eachdaynearly150,000peoplemoveth
随机试题
甲企业拥有三幢房产,分别为厂房A、厂房B和一幢办公楼,其中厂房A为与乙企业和丙企业共同共有。2014年有关甲企业房产的事项如下。(1)乙企业准备将厂房A进行内部装修,添置新的附属设施,经查,甲、乙、丙三个企业事先均没有约定处理方式,乙企业与甲企业和丙企业
心电图运动试验的禁忌证是
个人发现药品引起的新的或严重的不良反应,可向
施工总承包管理方施工项目管理的主要特征,对其说法下列正确的是( )。
在Excel中,单击某行的行号可以选择整行。
下列关于企业所得税纳税地点的表述中,说法不正确的是()。
2014年10月10日,甲公司购买乙公司发行的股票30万股确认为长期股权投资,占乙公司有表决权股份的30%,对其具有重大影响,采用权益法核算。每股买入价为5.2元,其中包含0.5元已宣告但尚未分派的现金股利,另支付相关税费O.6万元。取得投资时,乙公司可辨
著名教育家、体育活动家、教育学家、历史学家和现代奥林匹克运动的发起人是()。
下列关于科技常识的表述,不正确的是:
下列关于路由信息协议RIP的描述中,错误的是()。
最新回复
(
0
)