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、It can stay for a longer time in space. B、It can return to earth and make further flights. C、It can convert solar energy into
A、It can stay for a longer time in space. B、It can return to earth and make further flights. C、It can convert solar energy into
admin
2014-06-25
30
问题
The first flight of the Space Shuttle Columbia in the spring of 1981 was a revolutionary development in space exploration. Unlike the rockets of the previous twenty years, Columbia has the enormous advantage of being specially designed to return to earth and make further flights. Among the large number of projects, scientists are investigating its future use. The most exciting, perhaps, is that the first steps can now be taken towards establishing human colonies in space. The present Space Shuttle can only stay in space for about a week, but it could take people out to build "islands" where they stay for longer periods. By the year 2050 scientists estimate that man will be able to construct permanent settlements.
The first "islands" would be energy stations. There would be no hope of establishing colonies in space unless people could obtain energy there, instead of getting it from the earth. However, if the original could convert solar energy into electricity, it would be possible to provide the equivalent of a filling station for cars on earth, allowing the Space Shuttle to refuel and stay in orbit longer periods of time.
If this initial project was successful, much larger solar energy stations would be constructed later with materials brought out by the Shuttle.
Eventually, man would be able to construct an "inhabitable planet" in space.
Questions 19 to 21 are based on the passage you have just heard.
19. What can we learn from the passage about the Space Shuttle Columbia?
20. What is the big advantage of the Space Shuttle Columbia?
21. What is the basic requirement for establishing colonies in space?
选项
A、It can stay for a longer time in space.
B、It can return to earth and make further flights.
C、It can convert solar energy into electricity.
D、It can construct permanent settlements.
答案
B
解析
选项中重复出现的it can和stay for a longer time,make further flights和convert solar energy表明,本题可能与it的独特之处有关。由短文中提到的Columbia has the enormous advantage…to return to earth andmake further mghts可知,答案为B)。
转载请注明原文地址:https://kaotiyun.com/show/HGv7777K
0
大学英语四级
相关试题推荐
Weallmakepromisesinourdailyinteractionswithothers.Onthe【C1】_____hand,promisessuchas"I’llreturnyourbooknextwe
Weallmakepromisesinourdailyinteractionswithothers.Onthe【C1】_____hand,promisessuchas"I’llreturnyourbooknextwe
Weallmakepromisesinourdailyinteractionswithothers.Onthe【C1】_____hand,promisessuchas"I’llreturnyourbooknextwe
UnitedNationstalksonclimatechangehaveendedinBangkokwithlittlesignofprogress.Therearestillmajor【B1】______betwee
UnitedNationstalksonclimatechangehaveendedinBangkokwithlittlesignofprogress.Therearestillmajor【B1】______betwee
A、Theyalllookdifferentfromhumanbeings.B、Theyhavepowersgreaterthanhumanbeings.C、Theyexperiencebirthbutwillneve
MostAmericansconsiderthemselvesfriendlypeople.(1)______inthesouthernUnitedStates,inparticular,takeprideinentertai
A、Hewasgoodathistoryinschool.B、Healwaysgothighscoreinhistory.C、Hehadapoormemoryfordates.D、Hehadtroubleta
随机试题
张力性气胸行排气减压,胸膜穿刺部位是()
患者,男,20岁。1年前无诱因开始出现右膝关节肿胀、疼痛,并进行性加重,影响活动。外院曾行关节穿刺抽液(具体不详)。近1个月来,右膝关节肿痛加重,并伴有晨起全身关节僵硬感。既往5年来经常出现下腰部及双髋部酸痛不适,外敷膏药可稍好转。查体:双髋屈伸活动可,内
某人有5把钥匙,其中有2把可以打开房门,从中随机地取1把试开房门,则第三次才打开房门的概率是()。
依据《国务院关于预防煤矿生产安全事故的特别规定》,被责令停产整顿的煤矿应当制定整改方案,落实整改措施和安全技术规定,整改结束后要求恢复生产的,应当由()组织验收。
项目融资属于产品线中的( )。
下列各项中,应计入营业外支出的是()。(2017年)
下列关于绩效管理信度的叙述正确的有()。
LAC曲线和SAC曲线都呈先降后升的U型,这两者形成U型的原因是相同的。()
关于徇私枉法罪,下列哪些选项是正确的()
Whichstatementcanbestfittoeachofthefollowingsituation?ChooseFIVEanswersfromtheboxandwritethecorrectletter,
最新回复
(
0
)