人人终身学习知识网~是各类综合知识资源信息分享,提升综合素质与提高知识技能的终身学习网络平台

 找回密码
 立即注册

QQ登录

只需一步,快速开始

微信登录

微信扫码,快速开始

[高考复习指南] 2017届高三英语一轮单元检测:必修2 Unit3《 Computers》

[复制链接]

  Ⅰ.阅读理解(2017·重庆名校联考)BEIJINGWith the safe return to Earth on Wednesday of three astronauts after a successful 15

  Wang Zhaoyaodirector of the China Manned Space Agencyreleased a more detailed outline for the manned space program. He said in Beijing the manned space program will launch the Tiangong-2 space laboratory around 2017,and an experimental core space station module around 2018.The aim is to build a 60-ton multimodule space station by 2020.Between 2017 and 2020,a string of cargo (货物) and manned spacecraft will be launched to deliver supplies and transport astronauts to the space lab and space stationWang did not say how much will be spent on the forthcoming missionsbut said the Shenzhou X mission that ended on Wednesday took spending on the manned space program to 39 billion yuan ($6.35 billion) since it was started in 1992.He also said construction of a new launch site in Hainan province and development of two new types of launch vehicleboth crucial elements(组成部分) in the space programs next stagehave made smooth progress.Yuan Jiedeputy general manager of the China Aerospace Science and Technology Corpsaid the new site will see the launch of two types of Chinas new-generation carrier rockets.

  As the carrier rockets in service now cannot meet demand from the future manned space stationthe large-thrust(推力) Long March­5 carrier rocket(有效负荷) in near used to send cargo spacecraft to the future manned space station.

回复

使用道具 举报

小黑屋/人人终身学习知识网~是各类综合知识资源信息分享,提升综合素质与提高知识技能的终身学习网络平台

Powered by 5wangxiao

© 2007-2021 5wangxiao.Com Inc.

快速回复 返回顶部 返回列表