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It’s Saturday today. Lingling’s parents are going to have a birthday party for Lingling tonight. Lingling’s friends will come to the party. Can her friends come now? No, they can’t. Lingling and her parents are cleaning the house. Mum is making the bed, and father is sweeping the floor. Lingling is tidying up her bookshelf. They are very busy.
1．What day is it today?It’s
2．What are Lingling’s parents going to do tonight?
They’re going to
3．Who will come to the party?
4．What’s Mum doing now?
Mum
5．What’s Lingling doing now?
Lingling
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
