阅读理解。 New China received a great gift on September 29,2011—the successful launch (发射) of Tiangong-I. Scientists sent the country's first space lab module (太空实验舱) from the Jiuquan Satellite Launch Center in Gansu into space at 9:16 pm on Thursday. The Tiangong-I is a new spacecraft made by China. It's bigger and heavier than Shenzhou spaceships, about 8 tons. It is 10.4 meters tall, as high as a 3-story building. The Tiangong-I spacecraft will stay 350km above the Earth for two years. It will join with three spaceships, Shenzhou VIII, Shenzhou IX and Shenzhou X. The Shenzhou VIII spaceship, also unmanned, was launched in early November. Scientists will launch Shenzhou IX and Shenzhou X in 2012. Astronauts will enter Tiangong-I after successsfully joining their ships with the module. The Shenzhou X will be China's 6th manned spacecraft. It may carry the first woman astronaut into space. The launch of the Shenzhou spaceships and the Tiangong-I are all in preparation for building China's space station. The space lab and future space station are for experiments that can't be done on Earth. The main purpose of China's manned space station is to peacefully explore space, and through it, serve man,' One of the scientists said. 1. When did the scientists send the Tiangong-I into space? A. On September 29, 2012. B. On Octobert 3, 2011. C. On September 29, 2011. D. On Octobert 3, 2011. 2. How many spaceships will the Tiangong-I join? A. One. B. Two. C. Three. D. Four. 3. What is the Chinese meaning for the underlined word 'preparation'? A. 探测 B. 项目 C. 计划 D. 准备 4. What's the main purpose (目的) of China's manned space station? A. To explore space and serve man. B. To join with three spaceships. C. To do experiments in the Tiangong-I in the future. D. To carry the first woman astronaut into space.