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Today it’s Sunday and it’s a fine day. There are many people in the park. Some pupils are playing games (游戏) over there. Three boys are playing football. A girl is flying a kite. Two boys are running on the grass. There is a lake near a house. Beside the house two men are walking. A woman is watering the flowers. The flowers are beautiful.
1．Three boys are playing football in the park.2．A girl is flying a kite in the street.
3．Two men are walking beside the house.
4．A woman is beautiful. She is watering the flowers.
5．There are nine people in the park.
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
