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It was Sunday. Wang Jun and Li Qiang didn’t go to school. They went to the museum. They saw many photos of planets (行星) there. The photos are very interesting. They also saw photos of an astronaut. He is the first man on the moon. His name is Armstrong and he is from America. Wang Jun and Li Qiang wanted to know something about the Chinese space program (计划). So they watched a video about the spaceship. And they knew Shenzhou IX took three people into space in 2012. They were very proud of our country.
1．On Sunday Wang Jun and Li Qiang didn’t go to school.2．On Sunday Wang Jun and Li Qiang went to see plants.
3．They saw photos of Armstrong.
4．Shenzhou is the spaceship of China.
5．Shenzhou IX went into space in 2012.
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
