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
Some people, in all seriousness, say that humans will be living in space within the next hundred or so years. Planet Earth will
Some people, in all seriousness, say that humans will be living in space within the next hundred or so years. Planet Earth will
admin
2010-07-14
73
问题
Some people, in all seriousness, say that humans
will be living in space within the next hundred or so
years. Planet Earth will be crowded, dirty and lack of 【S1】______
resources. A sort of exodus (移居) of mankind will
begin.
Spaceships will be assembled so that they revolve
around the earth. Some may orbit around Mars. These
space stations will be serviced by space buses. We saw
the first space bus launch in April 1981. This was 【S2】______
"Columbia", it made several orbits around the earth and 【S3】______
then returned, landing on a huge dry lake bed in
California. "Columbia" will be used again. Previous
spaceships have been abandoned, only the nose cone
being used to bring the crews back to earth. 【S4】______
Upon established, each space station will generate 【S5】______
its own atmosphere and have its own agriculture. It will
need to rotation to provide an artificial gravity; people 【S6】______
will be forced inwards from the centre by centrifugal 【S7】______
(离心力) force.
The moon and Mars could become new sources of
new materials. Driving through space will no longer 【S8】______
need Earth fuel—the energy would come from the
sun. This energy would be converted from electricity to 【S9】______
work magnetic rockets.
That all sounds quite fantastically but, with the 【S10】______
rapid development of modern technology, who knows
about what the future holds?
【S5】
选项
答案
Upon→Once
解析
转载请注明原文地址:https://kaotiyun.com/show/vz7K777K
0
大学英语六级
相关试题推荐
Theoldestandsimplestmethod,then,ofdescribingdifferencesinpersonalitywasto【B1】______peopleaccordingto【B2】______.
TheEnglish【B1】______settlementsinNorthAmericabeganinthe17thcenturywhenWesternEuropewas【B2】______greatchanges
A、Itisnottheirs.B、Ithassomeproblems.C、Itisoutofwarranty.D、Itwasstolen.B该男士问的是有没有过保修期,可以推断出这台电视未出现被偷等情况而可能出现了毛病。
ThestudyfoundthatcigarettesmokingamongAmerican【36】______droppedduringthepastyear.Thedropcontinuesageneraldecre
A、Eggs.B、Diets.C、Protein.D、Exercises.B本题是主旨大意题。对话以Linda节食减肥为话题,讨论了一味的节食对身体带来的危害。对话中虽然出现了egg,protein,exercise这三个词,但不是贯穿整个对话的主
A、Acquireinformationfromsatellitesmoreefficiently.B、Torealizefullcoverageofareathesatellitepassesover.C、Building
A、Renewingpassport.B、Brushingherapartment.C、Buyingplanetickets.D、Goingtothetravelagency.B
Theaboveexperimentshowsthatnotalltheinformationwhichisreceivedcanberetainedforevenasecond.Theinformati
AIDS(AcquiredImmuneDeficiencySyndrome)isafataldiseasethatdestroystheimmunesystem.MorethanfouroutoffiveAIDSc
It’shardlynewsthattheimmigrationsystemismess.Foreignnationalshavelongbeenslippingacrosstheborderwithfakepape
随机试题
某企业只产销一种产品,2012年固定成本总额为50万元,实现销售收入100万元,恰好等于盈亏临界点销售额。2013年该企业目标利润定为20万元,预计产品销售数量、销售价格和固定成本与2012年相同。则该企业2013年变动成本率的降低率为()
政协地方各级委员会每届任期为________年。()
足月儿,臀位,吸引器助产,生后1天,出现嗜睡、呼吸不规则、肌张力低下,最可能的诊断是
A.小建中汤B.炙甘草汤C.桂枝人参汤D.桂枝甘草汤E.茯苓桂枝甘草大枣汤“伤寒,脉结代,心动悸”,治疗宜用
患者郭某,因足部被利器所伤,医嘱注射破伤风抗毒素,但皮试结果为阳性,此时应采取的措施是
外用治痈肿痰核用( )。燥湿化痰用( )。
检查维生素C中的重金属时,若取样量为1.0g,要求含重金属不得过百万分之十,问应吸取标准铅溶液(每1ml标准铅溶液相当于0.01mg的Pb)多少毫升( )。
脑血栓形成的“超早期”治疗时间一般是指发病后的
一般情况:求助者,男性,43岁,高中学历,公司经理,因不能控制的长时间洗手,过分爱干净多年前来咨询。求助者自述:我觉得自己得了一种“怪病”,老是觉得自己染上了病菌,町能会得癌症。因此,每天必须多次、长时间地洗手、洗衣,为此非常痛苦,别人也称我为“
若x为int型变量,则执行以下语句后,x的值为() x=6; x+=x-=x*x;
最新回复
(
0
)