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 project likely to evolve in the near or intermediate future is space tourism. Today space tourism has become a pure commercial
A project likely to evolve in the near or intermediate future is space tourism. Today space tourism has become a pure commercial
admin
2017-06-15
55
问题
A project likely to evolve in the near or intermediate future is
space tourism. Today space tourism has become a pure commercial【S1】______
activity that would not have to rely unpredictable government【S2】______
decisions. It would therefore put space operations on a much more
solid, dependable footing and would enormously expand man’s space
activity. If some people see space tourism as a potential multibillion-【S3】______
dollar business, difficult technical problems remain to be sobered.
First, in order to fulfill the dream of space tourism, a
manned reusable rocket like the Venture Star must be built.
Then, the second serious problem must be addressed; Even【S4】______
today’s most-advanced space rockets are able to lift only about
2. 5% of their launch weight into orbit—a ratio that has hardly
changed in the last 40 years. But it is simply impossible to find【S5】______
other alternations other than a rocket. This unsatisfying fact is a【S6】______
result of the limits of material characteristics and chemical power
sources, and there is no indication which any fundamental【S7】______
breakthrough can be expected in these areas in the foreseeable
future. Then these who have long-cherished dreams of space tourism【S8】______
have to wait forever.
Operational costs may be somewhat reduced by the use of air-
breathing engines to help a reusable rocket penetrate into earth’s
atmosphere. Today the highest cost attainable to lift a payload to【S9】______
orbit is more than $ 4,000 per pound; the price of a ticket to space
would have to be at least $ 50,000. It is questionable whether a
sufficient number of customers could be tempted to pay so a high【S10】______
price for a short trip around the world.
【S5】
选项
答案
But—And
解析
连词误用。上文指出“即使是今天最先进的火箭,进入轨道的最大承重力也只是它自身重力的2.5%,这一点40年来一直没有突破”,本句指出“人们除了火箭之外又找不到可以替代的东西”,可见二者是并列关系,而不是转折关系。
转载请注明原文地址:https://kaotiyun.com/show/zCsK777K
0
专业英语八级
相关试题推荐
Doctorsbaffledbyanunexplainedrashonpeople’searsorcheeksshouldbeonalertforaskinallergycausedtoomuch【M1】_____
Whomcanyoutrustthesedays?ItisaquestionposedbyDavidHalpernofCambridgeUniversity,andtheresearchersattheDow
Therelianceoncreditreportsinhiringisbecomingwidespread.AsurveybytheSocietyforHumanResourceManagementfoundt
Englishisoneoftheworld’smostwidelyspokenlanguages.ThisispartlybecauseitwasthelanguageoftheBritishEmpire.T
Thenatureofworkischanging.Recenttechnologicaladvances,ashiftfrommanufacturingtoservice-basedorganizations,incr
PASSAGEONE
PASSAGEFOURWhatcanwelearnfromtheplanningdocumentPlaNYC?
Culture—theFifthLanguageSkillI.TheunderstandingofcultureA."SoftwareoftheMind"—traditions,valuesand______behav
(1)Cooperativecompetition.Competitivecooperation.Confused?Airlineallianceshavetravellersscratchingtheirheadsoverwha
(1)WhencatastrophicfloodshitBangladesh,TNT’semergency-responseteamwasready.Thelogisticsgiant,withheadquartersin
随机试题
按教育内容的分类来说,法制教育属于( )。
不属于继发性肺结核的是
A.1天出血量超过50mB.1天出血量超过5mlC.胃内储积血量超过600mlD.一日出血量超过1000mlE.胃内储积血量超过250ml出现呕血
男性,48岁,胃溃疡病史10年,因家庭矛盾,近3个月胃脘部出现疼痛,内科药物治疗无效,疼痛一直存在,检查:隐血试验持续阳性。最可能的疾病是()
分离挥发油中()成分时,须用丙二酸单酰氯作反应试剂
央视的《中国汉字听写大会》掀起全国书写“方块字”的热潮,通过电视、网络、手机应用等形式吸引观众广泛参与,让人们在娱乐之中领略了“汉字之美”。这表明()。①汉字是人类文化传承的基本载体②汉字是中华文明一脉相传的见证③大众传媒是文化传
台秤:称重:重量
甲、乙、丙和丁进入某围棋邀请赛半决赛,最后要决出一名冠军。张、王和李三人对结果做了如下预测:张:冠军不是丙。王:冠军是乙。李:冠军是甲。已知张、王、李三人中恰有一人预测正确,以下哪项为真?
下面关于随机存取存储器(RAM)的叙述,正确的是______。
A、 B、 C、 D、 E、 A
最新回复
(
0
)