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It’s Sunday morning. Some children are in the park. They are having a good time. Some are playing games under a big tree. Some are singing and dancing. Some boys and girls are climbing the hill. Others are rowing on the lake.
Look, Tom is sitting by the lake. He is reading. Helen is running after a nice butterfly. She wants to catch it.
1．Who are in the park? ( )| A．Some students and teachers. | B．Some children. | C．Many old men. |
| A．They are jumping. | B．They are climbing mountains. | C．They are playing. |
| A．He’s sitting by the lake. | B．He’s reading by the lake. | C．He’s behind the lake. |
| A．She wants to catch a butterfly. | B．She is running. | C．She is reading. |
| A．Yes, they are. | B．They are having a good time. | C．Yes, they do |
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
