It’s March now. Spring is coming. Everything is beautiful in the park. There’s a lake in the park. A small house is near the lake. Some trees and flowers are on the hills. Many women are sitting in front of the house. What are they doing? They are talking. Some boys are playing football and some girls are flying kites. Look! There is a little boy near the lake. He’s drawing pictures.
1.It’s March now.2.There’s a river in the park.
3.A little boy is drawing pictures.
4.Some boys are flying kites.
5.A small house is near the hill.
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同类型试题
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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
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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
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