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根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
36 Shenzhou 1 lifted off from Jiuquan Satellite Launch Center on November 20, 1999. Shenzhou 1 succesully landed in central Inner Mongolia after 21 hours in orbit, finishing its first flight. This succesul flight laid a solid foundation for Chinese manned Spaceflight. Since then, Shenzhou 2—5 were succesully launched.
Shenzhou 6 was succesully launched at 9:00 a.m. on October 12, 2005. It carried two astronauts for five days and safely returned to Earth at dawn on October 16, 2005, making China’s manned space technology more mature. 37
Shenzhou 7 was launched on September 25, 2008, and succesully put three taikonauts(太空人) into space. 38 That means China’s first step into space. During this mission, shenzhou 7 also sent a small satellite into space. Shenzhou 7 safely landed on earth on September 28, which means the whole mission was completely succesul. 39 It was also the third milestone in the history of manned spaceflight in China.
Tiangong 1 lifted off from the Jiuquan Satellite Launch Center at 9:16 p.m. on September 30, 2011 as planned. 40 An unmanned spaceship will be launched in November to join together in space with Tiangong 1. Two more missions are scheduled for next year and astronauts will board Tiangong 1, which can also function as a space lab in the future space station. If the mission succeeds, China will become the third country to master spacecraft rendezvous and docking(太空站) technology following the then Soviet Union and the United States, experts said.
A. Gas and liquid are unable to mix on Earth, but in space they mix naturally.
B. It was an announcement to the world that China had grasped the key technology in spacewalking.
C. The purpose of China’s manned space station is to peacefully explore space, and through it, serve mankind.
D. China’s manned spaceflight program was officially approved in 1992.
E. One of them, two days later, made a monumental spacewalking.
F. The launch paves the way for China’s first space station mission.
G. It was the first time for China to have men engage in scientific experiments in space.
参考答案
36.D
37.G
38.E
39.B
40.F
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