话题10 北斗导航卫星系统-2020-2021学年高二期末复习热点话题阅读与题型专练（通用版）

2020-2021学年高二期末复习热点话题阅读与题型专练10 话题:北斗导航卫星系统 【1】 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。 Up to now, 55 BeiDou satellites 1． (send) up ， meaning the completion of China's self-developed BeiDou Navigation(导航) Satellite System (BDS). BDS appears later 2． America's GPS, Russia's GLONASS and EU's Galileo, but it can match them. As one of the fourth 3． (globe) navigation satellite systems, BDS involves efforts of over 400 agencies and 300,000 research personnel and technicians. Originally 4． (plan) in the 1980s, the network represents a milestone in China's space effort. BDS is comparable to GPS in terms of the 5． (accurate) of positioning. It also offers short message communication and thus can provide emergency communications in areas 6． conventional communication signals are poor in an effort 7．(improve) the quality of their positioning services, Apple and Samsung phones, among others, are already using BDS's signals, and so8． (be) every Chinese brand. The construction of complete BDS is a huge