首页
登录
职称英语
A. attempt B. charged C. crucial D. delicate E. essentially F. eventually
A. attempt B. charged C. crucial D. delicate E. essentially F. eventually
游客
2024-09-04
22
管理
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. [br] 【C3】
选项
答案
G
解析
空格前是系动词is,分析句子结构可知,once引导时间状语从句,因此,空格处应填入一个形容词构成系表结构,或填入一个现在分词或过去分词构成进行时态或被动语态。空格前面一句提到,在此之前的火箭几乎都是单次使用的。再结合常识可知,一旦火箭耗尽了燃料,它就会坠回地球,故G项expended“花费,耗费”为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3743782.html
相关试题推荐
(1)RogerRosenblatt’sbookBlackFiction,inattemptingtoapplyliteraryrat
_____humanbehaviormaybecausedbyeatingsubstancesthatupsetthedelicate
Maryhopestobe_____fromhospitalnextweek.A、dismissedB、dischargedC、expelled
MrsHardieeventually______frommakinganycommentalthoughshereallywantedt
______theattemptedrescuemission,thehostagesmightstillbealive.A、Ifitno
A.benefitsB.differentC.eventuallyD.instrumentsE.movingF.multipl
A.benefitsB.differentC.eventuallyD.instrumentsE.movingF.multipl
A.benefitsB.differentC.eventuallyD.instrumentsE.movingF.multipl
A.benefitsB.differentC.eventuallyD.instrumentsE.movingF.multipl
A.benefitsB.differentC.eventuallyD.instrumentsE.movingF.multipl
随机试题
Mostpeoplewhotravellongdistancecomplainofjetlag.Jetlagmakesbusine
Experiencetwogreattheme(主题)parksinonegreatresort(景点)--Disney’sCalif
下列关于校是非的表述,正确的有()。A.目的是发现原稿中的差错 B.功用是纠
在设备工程合同中,完成工程的含义有()。A.通过了竣工试验 B.完成了合同
建设工程采用设计—施工总承包模式的特点有( )。 A、建设单位招标发包工作难
“体语”不包括()。(2009-05)A:身体接触B:社会距离C:装束打扮
对于那些具有外部经济的企业,政府应当采取的政策是()。A.通过征税
根据《招标投标法实施条例》,下列属于评标委员会应当否决投标情形的有()。A.投
发包人财产清单包括( )。A.发包人提供的材料 B.发包人提供的设备设施
在汇总记账凭证账务处理程序下,库存现金日记账和银行存款日记账一般采用()。A、专
最新回复
(
0
)