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Today is Saturday. Jack and his family are going to have a picnic in the afternoon. It’s ten now. Jack’s grandma is making cakes in the kitchen. Jack’s sister Ann is in the kitchen too. She’s washing pears and apples. Jack’s dad is behind the house. He’s washing the car. What about Jack’s mum? She’s at the supermarket. She’s buying snacks(小吃) for the picnic.
1．Today is Sunday.2．Jack’s grandma is making cakes in the kitchen now.
3．Ann is Jack’s aunt.
4．Jack’s dad is washing the car behind the house now.
5．Jack’s mum is at the supermarket now.
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
