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
Read the following passages, eight sentences have been removed from the article. Choose from the sentences A-H the one which
Read the following passages, eight sentences have been removed from the article. Choose from the sentences A-H the one which
admin
2017-04-19
51
问题
Read the following passages, eight sentences have been removed from the article.
Choose from the sentences A-H the one which fits each gap.
For each gap(1-8)mark one letter(A~H)on the Answer Sheet.
Buzz Aldrin, the second man to walk on the Moon, is a long-time fan of space tourism. Aldrin climbed out of Apollo 11 hot on the heels of Neil Armstrong in 1969. 【R1】______
Together with scientists from Purdue University, the Massachusetts Institute of Technology, and the University of Texas, Aldrin is designing spacecrafts that would perpetually cruise between Earth and Mars.【R2】______"Some day, people will go to Mars on a regular basis," says team member James Longuski, a professor at Purdue. "【R3】______"
The average distance between Mars and Earth is 48 million miles. 【R4】______
It sounds like a trip that would require a lot of fuel. According to the engineers, the cyclers may have a natural, renewable "fuel" supply: from the gravitational forces of the Sun, the planets, and their moons.
As a spacecraft travels close to a planet, its flight path is bent, causing it to whip around the planet and significantly increasing its speed(it’s as if the planet’s gravity gives the passing spacecraft a kick into space).【R5】______It’s not just science fiction: it might help us get Mars with very little fuel on board, in a journey that would take as little as six to eight months.
"The cycler is essentially in orbit around the Sun and makes regular flybys of Earth and Mars," says James Longuski. "Once you put your vehicle into a cycler orbit, it continues on its own momentum, going back and forth between Earth and Mars.【R6】______"
When the cycler flies by Earth, it will be traveling at a speed of about 13,000 miles per hour.【R7】______"This is sort of like a bus that doesn’t stop," Longuski says. "When it comes by, you have to run alongside of it and grab on."
Aldrin and his group think that the first cycler could be on its way by as soon as 2018. 【R8】______ (It seems a long way off now, but it’s closer than you think!)
Fasten your seatbelts and make sure your seatback is in its upright position. Your flight to space may be departing soon.
A. These crafts, known as "cyclers", would ferry people and supplies between the two planets, enabling humans to colonize Mars — something that has long been dreamed about in science fiction.
B. Most people are convinced that we are going to do this; the only question is when.
C. So, if you’re in middle school now, you could be taking a trip to Mars by the time you’re in your thirties.
D. To get a sense of just how far this is, try doing this calculation: Given that there are 2,500 miles between New York and Los Angeles, how many times would you have to travel from NY to LA and back to cover the same distance?
E. Now, at the age of 72, Aldrin is working on a new project that could put more of his fellow humans in space — namely, on journeys to one of our most fascinating neighbors, Mars.
F. This is the "slingshot" trajectory that you may have seen in movies.
G Space taxis will be needed to bring people from the surface of the planet to intercept the cycler. H. You may need to carry some propellant for an occasional boost, but it’s pretty much a free trip after that.
【R1】
选项
答案
E
解析
文章开头简单介绍了奥尔德林,他是第2个登上月球的人,并且长期以来着迷于太空旅行。句E:“现在,已经72岁的奥尔德林正在进行一项工程,就是把更多的地球人运送至太空,也就是最令我们向往的邻居之一——火星。”这是关于奥尔德林现在的情况,并与前面提到的奥尔德林着迷于太空旅行相对应,因此选E。
转载请注明原文地址:https://kaotiyun.com/show/9G9d777K
本试题收录于:
BFT阅读题库国际化人才外语考试(BFT)分类
0
BFT阅读
国际化人才外语考试(BFT)
相关试题推荐
Writeanessayabout120wordsonthefollowingtopic:DoesEveryoneNeedtoGotoCollege?
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement.Face-to-facecommunicat
Yougotaletterfromacompanymanager,JimGreen.Dec.1st,20
YougotaletterrequestinginformationfromAndreaPhilips,themarketingmanagerofLinguaServicesLtd.
YouareBarbaraCrust,themotherofRoger.YouwritealettertoinviteAlfred,Roger’sbestfriendatschool,tocomeandstay
HereisaletterfromColoradoStateUniversitytoinformtheapplicantMr.LithathehasbeenadmittedtoCognitivePsychology
HereisaletterfromColoradoStateUniversitytoinformtheapplicantMr.LithathehasbeenadmittedtoCognitivePsychology
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingtopic:
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Trafficandhousingpro
Readthefollowingletterandcompletethegiveninformationform.Writeaword,phraseornumberinthespaces1-5.De
随机试题
ABC会计师事务所负责审计甲上市公司2012年财务报表。根据职业道德概念框架的方法和思路,ABC事务所应当从整体层面采取防范措施应对职业道德基本原则的不利影响。恰当的防范措施包括()。
关于苯二氮革类的药理作用,正确的是
坝区通过砂砾石层和基岩中较为均布的风化裂隙的渗漏称为()。
司机甲的该行为( )。依据《水污染防治法》的规定,新建、扩建、改建直接或者间接向水体排放污染物的建设项目和其他水上设施,必须遵守有关建设项目环境保护管理的规定,建设项目的环境影响报告书必须对( )可能产生的水污染和对生态环境的影响作出评价。
对增值税小规模纳税人,下列表述正确的有()。
用矩形的宽度和高度来表示频数分布的图形是( )。
公安机关必须接受党委领导的同时,还需要依照党政分开的原则,强调政府对公安机关的领导。( )
一满杯纯牛奶,喝去20%后用水加满,再喝去60%。此时杯中的纯牛奶占杯子容积的百分数为:
A、 B、 C、 CWhendoyouexpect…?“你期待何时…?”,正确答案应给出“时间”,in+时间,表示“在…之后”,halfanhour意为“半个小时”。(A)并没有问场所。(B)并没有问花了多长时
A、9:30pm.B、9:45pm.C、10:00pm.D、10:15pm.B男士询问女士飞机起飞的时间,女士告诉他是晚上十点差一刻。由此可知,飞机起飞的时问是9:45。aquarter表示时间时意为“一刻钟”。
最新回复
(
0
)