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
77
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
UnitedNationstalksonclimatechangehaveendedinBangkokwithlittlesignofprogress.Therearestillmajor【B1】______betwee
A、AbriefintroductionofsongsoftheBackstreetBoys.B、TheBackstreetBoys’statusintheUnitedStates.C、Howdidtheybreak
A、Heorganizesinternationalflightsfortourists.B、Hetravelsaroundtheworldwithcheaptickets.C、Hedeliverspapersandpa
随机试题
社会保障制度是市场经济运行的“减震器”和“安全网”。
下列调整幻灯片位置的说法正确的是________。
A、questionB、notionC、exceptionD、vocationA
以下哪项不是食品加工、贮存中产生的有害物质
属于真核细胞型的微生物是
松园公司与天利公司协商劳务派遣协议的下列条款中,不符合法律规定的有:
某居民小区位于市郊区外环线边缘,小区内有住户1840户,常住居民5300多人,基本上都是二十世纪五六十年代支边支农回城的人员、动迁人员和外地入住人员。小区人员有三大特点:一是无业和生活困难的居民多;二是六十岁以上的老人多;三是外来人员多。小区所在社区接上级
吴某深夜潜入陈某家中盗窃,发现房间内有一十分名贵皮箱(内有现金10万元),怕拖动时惊动陈某,便扔到墙外。偶尔经过的孙某发现皮箱无人看管,便将其拿走据为已有。吴某环顾房内其他地方没有发现值钱东西后,来到院墙外,发现皮箱已不见踪影。对吴某和孙某行为的定性,下列
曲面上任何点处的切平面在各坐标轴上的截距之和为__________。
在段定义伪指令语句中,下列哪一种组合类型是不可缺省的?
最新回复
(
0
)