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Today is Saturday. Everyone in Lily’s family is at home. Lily is painting in her bedroom. Her mum is cooking in the kitchen. Her sister Lanlan is playing her toy car. Her father is reading in the living room. Her grandparents are watering the flowers (浇花)in the yard (院子). What is her pet cat doing? Look, her pet cat is playing the ball.
1．It’s Saturday today.2．Lily’s mum is cooking in the kitchen.
3．Lily is painting in the school.
4．Lily’s grandparents are watering the flowers.
5．Lily’s sister is sleeping in the room.
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
