上海市洋泾中学2021-2022学年高三上学期12月考试英语试题

2021-2022学年洋泾中学高三上英语12月考试 II. Grammar and Vocabulary Section A China launched a satellite on Sunday morning to carry out technological tests for space debris (碎片) management, according to China Aerospace Science and Technology Corp, the country's major space contractor. The State-owned conglomerate(联合大公司) said in a brief news release that the Shijian 21 was lifted into space on a Long March 3B carrier rocket at 9:27 am from the Xichang Satellite Launch Center in southwestern China's Sichuan province, and later entered __21__ preset orbit. The launch marked the 393rd flight of a Long March class rocket. __22__ (develop) by the country's Shanghai Academy of Spaceflight Technology, the spacecraft is tasked with demonstrating its ability to alleviate and neutralize space debris, the company said, without giving more details about the mission. Space debris consists of useless artificial objects, including everything from spent rocket stages __23__ _____________ old satellites to fragments resulting from disintegration (瓦解), erosion and collisions. Some of that debris __24__ collide (碰撞) with operational spacecraft or cause hazards to manned spaceflights. A 1-centimeter object moving at 17,000 kilometers per hour would deliver as much energy as a hand grenade, and could destroy a spacecraft. There are more than 100 million pieces of debris smaller than 1 cm in space, altogether __25__ (weigh) thousands of metric tons, the administration said. __26__ China started a space debris action plan in 2000, it has so far allocated considerable resources to research the detection, prevention and mitigation of space debris. The China National Space Administration established its Space Debris Monitoring and Application Center in June 2015, __27__ is responsible for tracking waste, analyzing hazards, developing prevention and disposal plans, creating a debris database and communicating with other nations and international organizations. __28__ _____________ Tang Jingshi, a research a