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It’s a sunny day in April. Jack goes to the park with his parents by bus. There are some birds flying in the sky. The beautiful flowers and tall trees are dancing in the park. Jack and his parents like the park. They walk along the road in the park and see a river on their right. There is a boat on the river. A man is fishing in the boat. There is a bridge (小桥) over the river. Jack walks over the bridge. Then, he finds some swings under the trees. Jack runs to the swings and plays there. Jack’s mother likes the moment (时刻) and draws some pictures.
1．What season is it? ( )| A．It is spring. | B．It is summer. | C．It is autumn. |
| A．Beautiful flowers and tall trees. |
| B．A man is fishing in the boat. |
| C．Some swings. |
A． | B． | C． |
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
