中考真题2024年四川省自贡市阅读理解D篇-宇航员的训练
April 24th is Space Day of China. Ever since Yang Liwei made it to space in 2003, about 20 Chinese astronauts have been sent into space.
In space, astronauts face many problems. There is little gravity (重力) there, which influences their bodies. Also, being away from family and friends and staying in a tiny spaceship for a long time can make them feel sad or stressed out. What’s more, if something goes wrong suddenly, they have to fix it under huge pressure. That’s why astronauts have to be smart, strong, and ready for any challenge before they can go to space.
To make sure that Chinese astronauts complete their tasks and return to Earth safely, 8 kinds, including over 200 subjects of training, are set. Besides physical training, basic science knowledge and mock (模拟) tasks are included. Before astronauts can go to space, they train like this for at least three and a half years.
In China’s manned space project, one of the most difficult parts of the training is the underwater training. This helps astronauts get ready for the weightless environment in space. And they wear diving suits (潜水服) over 100 kilos and stay underwater for six hours every time.