首页
登录
职称英语
Some people, in all seriousness, say that humanswill be living in space wit
Some people, in all seriousness, say that humanswill be living in space wit
游客
2023-09-11
17
管理
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? [br] 【S3】
选项
答案
it→which
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3004502.html
相关试题推荐
[originaltext]Theremaybemanypeoplewhowanttoworkasanewsreporter.
[originaltext]Theremaybemanypeoplewhowanttoworkasanewsreporter.
Manypeoplethinkitistime____________________(政府采取适当的措施来解决交通问题).thatourgo
[originaltext]Mostpeoplepicturesharksashuge,powerful,frighteningpre
[originaltext]Mostpeoplepicturesharksashuge,powerful,frighteningpre
[originaltext]FewpeoplecanstandforthespiritofearlyAmericaasmuch
[originaltext]Sincemanfirstscrawledinthedirtwithhisfinger,people
[originaltext]Sincemanfirstscrawledinthedirtwithhisfinger,people
[originaltext]TheChinesepeople,Ifoundout,holdontomanytraditionstha
[originaltext]TheChinesepeople,Ifoundout,holdontomanytraditionstha
随机试题
"’PsychologyClass"[img]2012q1/ct_etoefm_etoeflistz_1034_20121[/img][br]Howd
中美两国建交以来,人民之间的交往不断扩大。两国已缔结了33对友好省州和123对姊妹城市。去年,到中国旅游的美国人多达131万人次。中国赴美探亲、求学、
Literatureisameansbywhichweknowourselves.Byitwemeet【M1】
Sharonwassupposedtobehereat10o’clock.She________aboutourmeeting.A、wou
建设项目从正式开工到全部建成投产或交付使用所经历的时间称为( )。A.合同工期
美术作品产生的来源()。A.结合实际生活的表现 B.美术家的臆想和创造 C
崩漏的主要病机是A:肾虚封藏失司 B:脾虚气不统血 C:血热迫血妄行 D:
()是指银行应保函申请人(通常为施工单位)的要求,向其交易对手(通常为工程业
某公路工程的1#标段实行招标确定承包人,中标价为5000万元,招标控制价为550
膀胱镜检查发现膀胱右侧壁新生物,大小约2cm×2.5cm,病理报告膀胱移行细
最新回复
(
0
)