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Astronauts are in space again! On Oct. 16th 2021, Shenzhou-13 spacecraft(神州十三号载人飞船), went into space from Jiuquan Satellite Launch Centre(酒泉卫星发射中心) in Gansu. It carried three Chinese astronauts into space. They are Zhai Zhigang, Wang Yaping and Ye Guangfu. They came back to the Earth on Apr. 16th 2022.
During their stay, they had many things to do. They worked on Tiangong space station. They did some scientific experiments(科学实验) and spacewalks. Wang Yaping is very famous now because she is the first Chinese woman to take a spacewalk. She finished a 6.5-hour spacewalk. Together with other astronauts, they gave the first lesson in space on Dec. 9th. Many students watched it and learned a lot about science.
1．Shenzhou-13 went into space from Tiangong.2．The three astronauts stayed in space for five months.
3．Wang Yaping took a spacewalk for 6. 5 hours in space.
4．The astronauts gave a Science lesson in space in December.
5．We can learn a lot from them.
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
