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This morning, there is a strong wind and heavy rain in Shanghai. In the park, many trees are blown down. In the afternoon, we go to the park to do some cleaning. Our teacher gives us some advice to clear away the fallen trees, branches and leaves. Then we begin our work. After an hour, we are working hard when it begins to rain again. It rains heavily. We don't take any umbrellas or raincoats. The rain lasts two hours. And we have to stop our work.
1．This morning, the wind blows strongly in Shanghai. （2．Many trees in the school are blown down. （
3．We go to the park to clear away the fallen trees, branches and leaves. （
4．We work in the park for two hours. （
5．It doesn't rain in the afternoon. （
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
