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On Saturday morning, Amy reads a book at home. Sam is watching TV. In the afternoon, she goes to the park with Darning and Sam. They go there by bus. In the park, some children are playing football. Daming wants to play with them. Sam is taking pictures. Amy walks in the park and she sees a dog. It’s lost. Amy helps the dog. They are all very happy.
1．Amy reads books at home on Saturday morning.2．Amy goes to the park with Darning.
3．Some children are playing table tennis in the park.
4．Sam is taking pictures.
5．They are all very happy.
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
