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I'm in a bus. I am looking out of the window. It is sunny and hot today. Some men are under the trees. They are playing Chinese chess. A woman is carrying an umbrella. She is walking in the street. Two girls are buying ice creams. But the bus is very fast（快的）. A moment later, I can't see them.
1．I am looking out of the window at home. （2．It is sunny and hot today. （
3．Some men are playing Chinese chess. （
4．A man is carrying an umbrella and walking in the street. （
5．Two girls are selling ice creams. （
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
