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 flight to other solar systems will be made more possible by ______. It is difficult to send people to other planets because o
A flight to other solar systems will be made more possible by ______. It is difficult to send people to other planets because o
admin
2009-04-18
51
问题
A flight to other solar systems will be made more possible by ______.
It is difficult to send people to other planets because of ______.
选项
A、lack of capacity of space exploration vehicles.
B、the financial expenditure involved in space travel.
C、controversial nature of space travel.
D、the uncertain future of space exploration.
答案
B
解析
由文章第三段“Perhaps the most difficult problem space planners face is how to finance a vigorous program of piloted space exploration...”可知,人类抵达其他星球的最大问题是资金问题,故选B。
转载请注明原文地址:https://kaotiyun.com/show/FyPd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
Agoodbookmaydrawourattentionsocompletelythatweforgetoursurroundingsandevenouridentityforthetimebeing.
Agoodbookmaydrawourattentionsocompletelythatweforgetoursurroundingsandevenouridentityforthetimebeing.
Somemoderncitiesareusuallyfamousforpeoplewholiveaverylongtime.
Whenaconsumerfindsthathispurchasehasafaultinit,whatisthefirstthingheshoulddo?
Accordingtothewoman,whatgovernstheclotheswewear?
TheVillageGreeninNewMilford,Connecticut,isasnapshotofNewEnglandcharm:acarefullymanicuredlawnflandedbyscrupul
Somechoicesmayberequiredmorethanonce.SectionAChangecanbeablessingoracurse,dependingonyourperspecti
Besidesthefunctionsasavitalentertainmentmedium,whatelsecanpeopleuseaTVas?
TherecentsocialandeconomicchangesintheUShavegreatimpactonalltheAmericanhousingsystem.
JillKerConway,presidentofSmith,echoestheprevailingviewofcontemporarytechnologywhenshesaysthat"anyoneintoday’
随机试题
试分析《庄子》“以卮言为曼衍,以重言为真,以寓言为广”的意思。
为了避免各种偏倚影响临床试验结果,设立哪一种对照效果最佳
企业知识产权投资存在的风险性主要包括(),企业应予以高度重视。
行政确认的主要形式有:()
为减少隧道内固定火灾荷载,隧道内通风系统的风管及其保温材料应采用______,柔性接头可采用______。()
对于犯罪集团的首要分子,一律按照集团所犯的全部罪行定罪处刑。()
对一项科学工作的评价不能简单地归结为一个数字的大小.任何数字都不能取代同行评议及对该工作科学意义的具体分析和历史检验。然而,不好的评价指标有可能误导评审人员,导致错误的结果;而好的评价指标可以提供更准确的信息,使相应的评审更加客观和公正。这段文字意在强调,
设f(x)在闭区间[0,c]上连续,其导数fˊ(x)在开区间(0,c)内存在且单调减少,f(0)=0,试应用拉格朗日中值定理证明不等式:f(a+b)≤f(a)+f(b),其中常数a,b满足条件0≤a≤b≤a+b≤c.
APopularityofScienceFictionBAFairlyNewDevelopmentCClassicsofScienceFictionDDifficultyinKeepingaheadofSc
Beijingisapoliticalandculturalcenterthatofferssomescenicattractions:Badaling,apartofthespectacularGreatWall,
最新回复
(
0
)