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
外语
A. attempt B. charged C. crucial D. delicate E. essentially F. eventually G. expended H. fraction I. individual
A. attempt B. charged C. crucial D. delicate E. essentially F. eventually G. expended H. fraction I. individual
admin
2023-01-09
63
问题
A. attempt B. charged C. crucial D. delicate E. essentially
F. eventually G. expended H. fraction I. individual J. maintain
K. minority L. negligible M. scrapping N. slashing O. upsurging
Space X launched a cheaper, partially-used rocket into orbit. That’s a stride toward【C1】________the price tag of sending payload to space. Successfully flying reusable rockets is a【C2】________step toward the dream of sending people to Mars. Until now, rockets have almost all been single-use. Once the fuel is【C3】________, a rocket stage plummets to Earth, resulting in the destruction of extremely expensive equipment that costs tens of millions of dollars to build.
Its founder has likened that to【C4】________a 747 jet after one flight, which would make air travel impossibly expensive. He has suggested that rocket launches could【C5】________be much cheaper since the cost of the rocket propellants are less than 1 percent of the full-price ticket for a launch. So, if a rocket could be simply refueled like a jetliner for another flight, the cost of space travel could drop to a【C6】________of what it is now. The stresses of spaceflight on reused boosters, however, are much greater than those on jetliners. The economics will depend on how many times a booster can be flown, and how much the 【C7】________expense will be to repair the booster each time.
Reusable spaceships are not a new idea. NASA’s space shuttles were the first real【C8】________at a reusable spaceship, but the shuttles proved more【C9】________than hoped, requiring an army of technicians to【C10】________them between flights. As a result, they ended up being more expensive than expendable rockets.
【C9】
选项
答案
D
解析
由空格后的连词than可知,此处是一个比较句,再由空格前的系动词proved可知,空格处应填入一个形容词。由下文中的an army of technicians及between flights可知,下文提到的是每次飞行后对航天飞机进行维修。由此可知,航天飞机很脆弱,需要及时维修,故D项delicate “微妙的;脆弱的”为答案。
转载请注明原文地址:https://kaotiyun.com/show/SdcD777K
0
专业英语四级
相关试题推荐
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
TheaverageBritishpeoplegetsix-and-a-halfhours’sleepanight,accordingtotheSleepCouncil.Ithasbeenknownforsomet
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】________theboxystereosysteminthec
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】________andshowoffitspersonality.Firms
A)Thesetoolscanhelpyouwineveryargument—notintheunhelpfulsenseofbeatingyouropponentsbutinthebettersenseof
[A]Thisre-grown"secondary"forestiscrucialtothepair’sanalysis.Withinafewdecadesoflandbeingabandoned,halfoft
[A]Airbnbisfightingtherulingwithalawsuit.Itsmainargumentindefendingitspositionascomplementaryratherthanin
A.appealB.assuranceC.bottomD.deliveryE.exertedF.fewG.generalH.heartI.identicalJ.lingeringK.m
A、Inafabuloustrain.B、Inawoodencottage.C、InanAmericancar.D、Inabigtent.B听到thehousewestayedin之后,紧接着听到woodenbui
随机试题
关于第一审民事判决书书写判决适用的法律,不正确的是()
A.2岁B.3岁C.4岁D.5岁E.6岁
根据项目不同需要和不同用途,业主方和各参与方可以构建由()等多个不同的进度计划系统组成的计划系统。
借贷记账法的记账规则是( )。
已知甲股票的期望收益率为12%,收益率的标准差为16%;乙股票的期望收益率为15%,收益率的标准差为18%。市场组合的收益率为10%,市场组合收益率的标准差为8%,无风险收益率为4%。假设市场达到均衡。要求:分别计算甲、乙股票的必要收益率。
2013年1月18日,广源商贸有限责任公司(以下简称广源公司)从达华公司进一批货物,同时向达华公司开具一张商业承兑汇票,用于货款结算。广源公司开具商业承兑汇票时,将付款人填写为“广原商贸有限责任公司”,出票日期为“贰零零陆年壹月拾捌日”,收款人未填写。后经
简述齐白石作品的艺术特色及主张。
仙姿赫然的朱鹮是日本的圣鸟,甚至它的拉丁文名就叫做“日本的日本”。在一切__________和__________的场合,从1000多年前奈良时代的皇室仪式,皇宫的主色调,到如今民间的和服,房间的陈设,传统歌曲,日本处处都有它的身影。依次填入划横
简述罗杰斯的有意义自由学习观。
设A是n阶反对称矩阵,(I)证明:A可逆的必要条件是n为偶数;当n为奇数时,A*是对称矩阵;(Ⅱ)举一个4阶不可逆的反对称矩阵的例子;(Ⅲ)证明:如果λ是A的特征值,那么一λ也必是A的特征值.
最新回复
(
0
)