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It is Sunday today. The weather is fine. Daniel and Jane are in the park. The park is beautiful. They come here to have a rest(休息) after a week’s work and study. Some boys are playing football on the grass. Some girls are singing and dancing. An old woman is reading a newspaper(报纸) on a long chair. A young man and his little son are playing toy cars. How happy they are!
1．Daniel and Jane go to the park on Saturday.2．Some girls are singing and dancing.
3．A little girl is playing toy cars.
4．An old man is reading a newspaper.
5．Everyone in the park is happy.
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
