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Daming went to Hainan with his family last year. It's in the south of China. They went swimming in the sea. And they visited his uncle. His uncle lives there with his three children. He took many photos. Hainan is very beautiful. They had a lovely time there.
1．Last year Daming went to Hainan with his friends.2．Hainan is in the west of China.
3．Daming went swimming in the sea with his family.
4．Daming's uncle lives there with his three children.
5．Daming didn't take many photos.
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
