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
64
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.
【R6】
选项
答案
H
解析
第6段介绍了“骑车人”飞行器实际上是沿着太阳的轨道飞行,并定点飞过地球和火星。句H“也许需要携带些燃料能偶尔为飞行器提供动力,其余时间就完全处于无动力飞行了。”在原文中使用的都是第二人称,是引用一位工程师的话,并且都是关于这种飞行器的飞行条件,因此H正确。
转载请注明原文地址:https://kaotiyun.com/show/bG9d777K
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
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement.Face-to-facecommunicat
Readthefollowingjobadvertisementintoday’sDailyTelegraph,YouareAnnJonesandwritealetterabout120wordsofapplica
YouareBarbaraCrust,themotherofRoger.YouwritealettertoinviteAlfred,Roger’sbestfriendatschool,tocomeandstay
HereisaletterfromColoradoStateUniversitytoinformtheapplicantMr.LithathehasbeenadmittedtoCognitivePsychology
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingtopic:Tea
Readthefollowingstatement:Onlyunderofficiallawsoradministrativeregulationscanwedefendastableandreliableexa
Lookatthefollowingstatement:Beingcreativeisthekeytocareersuccess.Doyouagreeordisagreew
Lookatthefollowingadvertisement.ChinaDailyWewouldliketohearyouropinionsaboutthe
Youareaskedtowriteacompositioninwhichyougiveyourownopinionsonthefollowingstatement:Trafficandhousingpro
Readthefollowingletterandcompletethegiveninformationform.Writeaword,phraseornumberinthespaces1-5.De
随机试题
A、Kidsshouldlearnnottobeafraidofmonsters.B、FirefightersplayanimportantroleinAmerica.C、Carelessnesscanresultin
自然资源统计的范围()
A、2/3B、3/2C、2D、3A
下列表述放在“我们要学习文件”之后,可以消除这句话歧义的一项是()。
公路工程进度计划的检查结果可以通过()体现和分析。
甲公司从事建材生产作业,其在外地设有一分公司乙,并且已取得营业执照;2016年8月,因生产规模扩大,乙公司决定新招一批生产工人。随后乙公司在当地招聘了包括小王和小李在内的15名工人,9月1日开始工作。乙公司与应聘个人口头约定了工作内容和工资数额。
下列选项中,属于行政事实行为的是()。
写一个建立堆的算法:从空堆开始,依次读入元素,调用上题中堆插入算法将其插入堆中。
GeneralWesleyClarkrecentlydiscoveredaholeinhispersonalsecurity—hiscellphone.Aresourcefulblogger,hopingtocall
Englishhasbeensuccessfullypromoted,andhasbeeneagerlyadoptedinthegloballinguisticmarketplace.Onesymptomoftheim
最新回复
(
0
)