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I'm Tiantian. I'm in the park now. Look at the people here. Some boys are playing football. Some old men are doing taijiquan. Look at the girls between the big trees. What are they doing? They are talking and drinking soya milk. Look at the clock. It's twelve. I'm hungry. I will go home and eat lunch.
1．Tiantian is in the zoo.2．Some boys are playing football.
3．Some old men are rowing a boat on the lake.
4．Some girls are drinking soya milk and talking.
5．Now it's twelve. I'm hungry.
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
