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
40
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.
【S4】
选项
答案
the—a
解析
冠词误用。此处then表示“然后”,而second并不是表示第二个,而是表示“另一个”问题,因此不需要定冠词the来修饰。如果用the的话,then和the second就语义重复了。
转载请注明原文地址:https://kaotiyun.com/show/sCsK777K
0
专业英语八级
相关试题推荐
Stoppingcigarettesmokinghasbecomeabigproblemforallgovernments.Indemocraticcountries,theeconomicstrengthofthe
Universalizationofeducationhasbeenapolicypriority,butitstillremainsanunfulfilleddream.Asaconsequence,thespre
Thereisnolink,whatsoever,betweentheproducersandusersofmanpowerwiththeresultthatinstitutionsoflearning,essent
Englishisoneoftheworld’smostwidelyspokenlanguages.ThisispartlybecauseitwasthelanguageoftheBritishEmpire.T
"Artdoesnotsolveproblems,butmakesusawareoftheirexistence,"sculptorMagdalenaAbakanowiczhassaid.Artseducation,
Thedayswhenjournalismwaslimitedtoobtainingpressbriefingsandwritingfirsthandaccountofhappeningsinthe【M1】______
Thegovernment’scontinuingfailuretoaddressournation’sgut-wrenchingunemploymentstemsfromafundamentaldisagreemento
A、Itishardtoresolve.B、Itwillbesolvedprettysoon.C、Itiskindofslander.D、Itisunworthyofmention.A
(1)Cooperativecompetition.Competitivecooperation.Confused?Airlineallianceshavetravellersscratchingtheirheadsoverwha
A、Therearethousandsofparticipants.B、TheChallengelastssixweeks.C、Amyiswaitingtochallenge.D、TheChallengeiscurren
随机试题
A.升清阳B.透表邪C.疏肝气D.散郁火E.以上都不是
A、舌尖B、舌中C、舌边D、舌底E、舌根胃在舌分属部位是
入境废物必须在货物到达后即向口岸检验检疫机构报检,并由检验检疫机构对货物实施 ( ),合格后方可签发“入境货物通关单”办理通关放行手续。
某企业于2018年5月年成立.领取了营业执照、房屋产权证、土地使用证、商标注册证各一件,资金账簿记载实收资本2000万元,新启用其他营业账簿10本,账簿上记载拥有自重10吨载货汽车10辆,7.8吨挂车5辆。当年发生经济业务如下:(1)5月初将一间门面房
一般而言,银行的银行是作为最后贷款人,在商业银行资金不足时向其发放贷款,因此指的是()。
Thedefenseattorneycontemplatedalongtimebeforefinallymakinghisdecisionto______theaccusedincourt.
对一些因特殊原因,如暴力、歧视等造成的流浪儿童,救助机构和社会工作者要坚持(),切实为儿童创造安全和健康的生活环境。
某品牌计算机的部分硬件配置如下:Intel酷睿i584003.6GHz/1TB7200转/8GDDR3/DVD……下列说法正确的是()。
在下列字符中,其ASCII码值最小的一个是
IfonlyI______playtheguitaraswellasyou!
最新回复
(
0
)