题目

阅读下面材料，在空白处填入适当内容（1个单词）或括号内单词的适当形式。     Two new satellites of the BeiDou Navigation (导航) Satellite System (BDS)(send) into space from the Xichang Satellite Launch Center in Sichuan Province on November 19, 2018.     The satellites entered the orbit(safe) more than three hours later and will work with 17 other BDS-3 satellites already in space. They are also the 42nd and 43rd(member) of the BDS satellite family. China launched these satellites withaim of providing navigation services for countries and regionsparticipate in the Belt and Road Initiative(倡议) by the end of 2018. This is a key step for BDS developinga Chinese experimental system to a regional and then a(globe) navigation system. The positioning(accurate) of the BDS-3 system has been improved to 5 meters.(name) after the Chinese term for the Plough(北斗七星), the BeiDou system has been serving China for 18 years. The system is expected (provide) first-class services around the globe by the end of 2020. 答案：【1】were sent【2】safely【3】members【4】the【5】which/that【6】from【7】global【8】accuracy【9】Named【10】to provide

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