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
2018-05-25
64
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.
【S7】
选项
答案
which—that
解析
从句引导词误用。indication后面的从句是同位语从句,不是定语从句,因此只能用that引导。
转载请注明原文地址:https://kaotiyun.com/show/keoK777K
0
专业英语八级
相关试题推荐
UnderstandingTypesofPoemsI.EpicpoemsA.Definition:—anarrativeconcentratingon【T1】______andeventsthataresignificant
A、Personalspaceinvaders.B、Noisyco-workers.C、Thosewastingyourtime.D、Thosefightingwithyou.D本题设题点在信息列举处。根据句(5)可知,破坏界限者
A、Subjective.B、Supportive.C、Regretful.D、Indifferent.C本题设题点在转折处。根据句(7—1)可知,在夏威夷度假时,加布和他的妻子花了一大笔钱住酒店,紧接着在句(7—2)中加布提到如果现在再去的话,他
A、Theycanprovidebetterservicewithlowerprice.B、Theycanprovidebetterservicewithhigherprice.C、Theycanprovidethe
HowtoApproachaDissertationI.WhatisadissertationA.Apieceofwritingwithargument:—analyzetheevidencetosupport
HowtoApproachaDissertationI.WhatisadissertationA.Apieceofwritingwithargument:—analyzetheevidencetosupport
A、Therearethousandsofparticipants.B、TheChallengelastssixweeks.C、Amyiswaitingtochallenge.D、TheChallengeiscurren
Oneoftheobviousproblemswithpredictingthefutureeffectsofclimatechangeisthattheyhaven’thappened.Thismakesclima
PassageFourAccordingtoParagraphSix,whatbenefitcanthistechnologybring?
Thebookisdead.Technologyhaskilledit.Thelibrariesoftheworldaredoomingtobecomemuseums.Americans,however,【M1】___
随机试题
蓄电池充足电的特性之一是端电压上升到2.8V以上。()
话剧《龙须沟》的作者是【】
可用于测定蛋白质分子量的电泳是
不属于手少阴心经的腧穴是
女,36岁。喘憋,咯血3小时。查体:BP130/70mmHg,双肺布满湿啰音和哮鸣音,P102次/分,心律齐,P2亢进,心尖部可闻及舒张期杂音。该患者最适宜的治疗是
A公司销售给B公司一批库存商品,A公司收到B公司签发的商业承兑汇票面值为82.5万元。到期日由于B公司财务困难,经修改债务条件,A公司同意将此债务延期一年,并按8%年利率计算延期1年的利息,债务本金减到60万元,免除剩余债务,但附或有条件,如果展期期间B公
下列世界著名瀑布中享有“中华第一瀑”之盛誉的是()。
自唐以来,苏州天平山就是游览胜地,风景以“天平三绝”为著。“天平三绝”是指()。
长沙马王堆帛画是哪个朝代的作品?()
教学演示实验实验的预备知识:(1)三价铁离子和过氧化氢酶均可以催化过氧化氢分解成水和氧气。(2)动物肝脏中含有丰富的过氧化氢酶。实验步骤:(1)按照标准程序制备肝脏研磨液:称取一定量的动物的新鲜肝脏,剪碎后放入研钵研磨,然后再
最新回复
(
0
)