期末专题复习-阅读理解 2023-2024学年人教版英语九年级上学期期末真题备考.docx

期末专题复习-阅读理解 2023-2024学年 人教版 九年级上学期期末真题备考 （含答案解析） Over 5 million shared bikes in China are using services offered by Beidou Navigation Satellite System. These shared bikes all use Beidou-based positioning chips. The chips have high qualities. They can deal with information accurately and quickly. They provide a better user experience and easier management for the local companies. Now, several new models of shared electric bikes with Beidou-based chips have also started to be produced and put into market. Besides positioning and navigation, the chips will help users and bike companies record user speed and battery condition of an electric bike. The possible crimes during the bike using will also be recorded. In fact, years ago, shared bike companies began to use positioning chips which worked well with both GPS and Beidou services. After the Beidou system became completely in use in the summer of 2020, shared bike companies started to install Beidou-based chips on more bikes in more areas. The latest chips which are popular with bike companies are smaller and have more advantages over the old types. Since 2000, a total of 59 Beidou satellites have been sent into space from the Xichang Satellite Launch Center in Sichuan Province. After the final satellite was sent in 2020, the system was completed and started providing global services. Beidou Satellite System is designed and developed by China. China has built the BeiDou Navigation Satellite System (BDS) into a top-class system with cutting-edge technologies, pioneering design and powerful functions, according to a white paper published on Friday by the State Council Information Office. It is one of four global navigation networks, along with the United States’ GPS, Russia’s GLONASS and the European Union’s Galileo. According to a research in 2022, by the end of 2021 the total value connected with satellite navigation and positioning services in China was 469 billion yuan , a