搜索
A boy put a bird in a cage. He liked it very much and watched it every day.
A cat saw the bird and wanted to have it for supper. But the bird was in the cage. She couldn’t catch it. So she was very angry.
One day, the cat opened the door of the cage and wanted to catch it. But the bird flew away.
The boy came back home but he could not find the bird. He was very angry and put the cat into the cage.
1．The boy put the bird in the schoolbag.2．The boy liked the cat very much and watched it every day.
3．The cat wanted to have the bird for supper.
4．The cat was very clever.
5．The boy was very happy at last.
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
