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 J. maintain
A. attempt B. charged C. crucial D. delicate E. essentially F. eventually G. expended H. fraction I. individual J. maintain
admin
2020-11-21
77
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.
【C8】
选项
答案
A
解析
空格前是形容词real,空格后是介词短语,且分析句子结构可知,本句缺少表语,因此,空格处应填入一个名词作系动词were的表语。本段第一句提到,太空船的重复使用并非新概念,原因是美国国家航空航天局之前曾经首次尝试重复使用过太空船,故A项attempt“努力,尝试”为答案。
转载请注明原文地址:https://www.kaotiyun.com/show/hACK777K
0
专业英语四级
相关试题推荐
U.S.EarlyChildhoodEducationFiftyyearsago,【T1】______attendedearlyeducationprograms.Today,【T2】______thechildrenof
VariationsinBritishAccentsLanguage【T1】______aspeopletrytoexpressthemselvesindifferentwaystodifferentpeople.
LimitingDriverDistractionInrecentyears,distractionbyadeviceintegraltothevehiclehasbeenreported/inalarge
A、Shehasn’tchangedalot.B、ShewenttoAmerica4yearsago.C、Shehasknownthemanfor10years.D、Thelasttimeshesawthe
A.switchingB.criticalC.diminishD.buysE.peeledF.crucialG.alteringH.fryersI.cutJ.adequatelyK.tasteL.
A.unspoiledB.renewC.originalD.livedE.architecturalF.initialG.someH.nearbyI.spoiledJ.maintainedK.vol
A、Iamtheparent,andIamcomfortablebeingincharge.@B@Pleasedon’tannoyme,orIwillpunishyou."B、Iamtheparent,and
ThreeTipstoImproveYourPublicSpeakingSkills1.Childrenasyoungas【T1】______:showandtellNumberonefear:【T2】_____
ThefollowingchartshowstheexpansionplansofChinesecompaniesinoverseasmarketsinthenext5years.Lookatthechartca
A、It’sdarkandscary.B、It’seco-friendly.C、It’scozy.D、It’scolorful.A
随机试题
按预算期内可预见的多种生产经营管理活动水平为基础编制的预算,称
Mr.Smithusedtoworkthenight______inapowerplant.
关于CT放大扫描的叙述,错误的是
患者,男,79岁。食欲缺乏、口渴7天,嗜睡1天。体温37.0℃血压80/50mmHg,意识模糊,尿糖(++++),尿蛋白(+),尿酮体(一),CO22CP23mmol/L,Urea15.6mmol/L最可能的诊断是
根据我国现行宪法的规定,退休人员的生活受到()。
《建筑设计防火规范》适用范围不包括下列哪一类建筑?
关于经济规模的概念理解正确的是()。
下列哪个指标不能用来衡量债券的收益性?()
全面依法治国,必须从我国______出发,突出中国特色、实践特色、时代特色,既不能罔顾国情、超越阶段,也不能因循守旧、______。填入横线部分最恰当的一项是:
下列选项中,(42)是Novell网自身的传输协议。
最新回复
(
0
)