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阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。 Two new...

阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

Two new satellites of BeiDou Navigation (导航) Satellite System (BDS)1.(send) into space on a Long March-3D carrier rocket from the Xichang Satellite Launch Center in Sichuan Province, China at 2:07 a.m. on November 19, 2018. The satellites entered a Medium Earth orbit (轨道) 2.(safe) more than three hours later and will work with 17 other BDS-3 satellites already in space. They are also the 42nd and 43rd3.(member) of the BDS satellite family.

China launched these satellites with the aim of providing navigation services4.countries and regions which participate in the Belt and Road Proposal by the end of 2018. “This is a key and5.(value) step for BDS developing from a Chinese experimental system to a regional and then a global navigation system,” said Yang Changfeng, chief expert6.contributed much to the BeiDou system. The positioning7.(accurate) of the BDS-3 system has been improved to 2.5 meters to 5 meters, said Yang.

8.(name) after the Chinese term for the Big Dipper, the BeiDou system has been serving China for 18 years where another six BDS-3 satellites will be put into the Medium Earth orbit from 2019 to 2020. The system is expected9.(provide) first-class services around10.globe by the end of 2020.

 

1.were sent 2.safely 3.members 4.for 5.valuable 6.who/that 7.accuracy 8.Named 9.to provide 10.the 【解析】 本文是一篇说明文。文章介绍了BeiDou-1, BeiDou-2,和BeiDou-3卫星导航系统的组成,重要作用,发展过程及对世界的影响。 1.考查一般过去时态的被动语态。句意:2018年11月19日凌晨2时07分,北斗导航卫星系统两颗新卫星由长征三号丙运载火箭从四川省西昌卫星发射中心发射升空。句子主语是“两颗新卫星”,是复数形式,且主语和send之间是一种被动关系,再根据文中提到的时间是过去时间,所以此空用一般过去时态的被动语态,故答案为were sent。 2.考查词形转换。句意:这些卫星在3个多小时后安全进入中轨,并将与已经进入太空的另外17颗北斗3号卫星一起工作。此处enter是动词,有副词来修饰,故答案为safely。 3.考查名词复数。句意:他们也是北斗卫星家族的第42和43个成员。结合句意可知此处用名词复数,故答案为members。 4.考查介词。句意:中国发射这些卫星的目的是,到2018年底为参与“一带一路”建设的国家和地区提供导航服务。考查固定搭配:provide sth. for sb.“为某人提供某事”,故答案为for。 5.考查词形转换。句意:这是北斗从中国实验系统向区域乃至全球导航系统发展的关键和有价值的一步。此处step“步伐”,是名词,由形容词来修饰,故答案为valuable。 6.考查定语从句。句意:为北斗系统做出巨大贡献的首席专家杨长峰说。此处Yang Changfeng是先行词,指人,在后面的定语从句中作主语,故答案为who/that。 7.考查词形转换。句意:杨说,北斗-3系统的定位精度已提高到2.5米至5米。此处用名词作主语,故答案为accuracy。 8.考查过去分词作时间状语。句意:北斗系统以北斗七星的中文名称命名之后,已经为中国服务了18年,2019年至2020年,另有6颗北斗3号卫星将被送入中轨。此处句子主语the BeiDou system和name之间是一种被动关系,是过去分词作时间状语,故答案为Named。 9.考查固定搭配。句意:预计到2020年底,该系统将在全球范围内提供一流的服务。固定搭配:expect sb. to do sth.“期盼某人做某事”,此处是被动语态,故答案为to provide。 10.考查固定用法。句意:预计到2020年底,该系统将在全球范围内提供一流的服务。此处是固定用法,故答案为the。
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