More than 5 million shared bikes on the Chinese mainland are using positioning and navigation services 【小题1】 are provided by the country’s Beidou Navigation Satellite System. These shared bikes have been equipped 【小题2】 domestically developed Beidou-based positioning chips. These chips feature high accuracy and sensitivity, and low power consumption, which allow for an easier management for city authorities. Since June 2020, 59 Beidou satellites, including the first four experimental ones, 【小题3】 (lift) on the Long March 3-series rockets from the Xichang Satellite Launch Center in Sichuan province.

Technology giant Tencent has announced plans 【小题1】 an almost entirely car-free “city of the future” in Shenzhen.

Known as “Net City,” the 2-million-square-meter urban development (都市开发区) will pay more attention to green spaces and self-driving vehicles, according to 【小题2】 (it) designers.

【小题3】 (design) to accommodate (容纳) a population of some 80,000 people, the site of this city-within-a-city will primarily serve Tencent, the company behind WeChat and China’s popular QQ messaging service.

But as well as providing company offices, the neighborhood is expected 【小题4】 (host) shops, schools and other 【小题5】(convenience) facilities.

It will 【小题6】 (connect) to the rest of Shenzhen via road bridges and 【小题7】 city’s subway system. The firm behind the master plan, NBBJ, hopes that the new district’s parks and waterside promenade (步行大道) will attract 【小题8】 (visitor) from elsewhere in the city.

The plan differs from the enclosed campuses pioneered by big tech companies in recent years, according to Jonathan Ward, a design partner at NBBJ. “It’s 【小题9】 (definite) a wonderful destination,” he said in a phone interview. “It’s not meant to be an enclosed island — it’s a city full of life and energy, 【小题10】 will be a vital hub (中心) for Shenzhen.”

【小题1】 (doubt), Earth is becoming warmer and there is strong evidence of 【小题2】 causes the dramatic change in the global climate. Actually, the “greenhouse effect” is 【小题3】 (blame). The rise in temperature has 【小题4】 (lead) to an increase in extreme weather and natural disasters worldwide, not only 【小题5】 (cause) serious damage, but also costing human lives. To reduce greenhouse gas emissions, governments need to consider making policies and 【小题6】 (take) appropriate actions and measures while we as individuals can also reduce our “carbon footprint” by restricting the amount of carbon dioxide our lifestyles produce.

China 【小题7】 (make) great progress in space programme in recent years, including Yang Liwei’s successfully orbiting Earth in the Shenzhou 5 spacecraft in 2003 and Chang’e 4’s exploring the surface of the far side of the moon to make 【小题8】 (measure) and observations.

The future of space exploration remains bright. 【小题9】 the difficulties, scientists hope future discoveries will not only enables us 【小题10】 (understand) how the universe began, but also help us survive well into the future.