内容正文:
Unit 4单元话题阅读理解练习
(名校最新真题)
(2023春·贵州铜仁·高一贵州省铜仁第一中学校考期中)
①China successfully launched Mengtian into space, getting a step closer to completing the country’s Tiangong Space Station by the end of this year.
②Mengtian is the second lab module(模块)and the last major component of the country’s space station. The first lab module is Wentian which is already docked (对接)with the Tianhe core module. The three modules will form a T-shaped complex in space.
③Mengtian weighs about 23 tons. It is 17.9 meters long and has a maximum diameter of 4.2 meters. It can be further subdivided into work, resource, payload and cargo airlock cabins.While Wentian is used for biological and space life science projects, such as observing the growth of various kinds of plants, animals and microbesin space, Mengtian will be used for in-orbit experiments dedicated to physics and material sciences and will focus on micro-gravity experiments. Mengtian will also act as a backup(备份)for the core module when it is undergoing maintenance(维修). And with Mengtian in place, the space station will be able to hold more taikonauts.
④Until now, space lectures(天宫课堂), Tiangong Class”, in China’s Tiangong space station have been broadcasting live to the world, attracting much attention in society. The public, especially the youth, are looking forward to the next space lecture. There are three taikonauts on board the space station at the moment. When Shenzhou-15 arrives with a change of crew, scheduled for early December, there will be six Chinese taikonauts living and working on the space station for a time until the return of the Shenzhou-14 mission crew members.
⑤China plans to complete the in-orbit construction of the space station by the end of this year. After that, the country’s space program will enter a new decade-long development and application stage. The original plan is to send two crewed spaceships and two cargo spaceships into space every year. Meanwhile, taikonauts will stay in orbit for extended pe