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Today is October 1st. It's Lingling's birthday. It's a sunny day. So Lingling's family is going to have a picnic in the park. Her mother bought her a birthday cake, some hamburgers, some colas and many fruits. Her father bought new bag for her. They will sing, dance and eat in the park. They will have a funny time.
1．When is Lingling's birthday?2．What is her family going to do?
3．What did Lingling's father buy for her?
4．Did her mother buy some hot dogs?
5．Will they have a funny time?
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
