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When I have time, I usually watch birds and read books about birds. I like owls and pigeons very much. I know a lot about them.
| Owls are night animals. They have big eyes. They can see things well at night. Owls sleep in the daytime. At night, they come out to find food. They eat small animals like rabbits and mice (老鼠). They also eat fish and other birds. |
 | Pigeons are big birds. They like to live in a birdhouse. Many people like to keep (养) pigeons at home. They usually make rooms for pigeons by the window. In the day, the pigeons fly away. But at night they come back. Sometimes people tie (系) letters to pigeons’ legs. They can send them. |
1．I like
2．Owls’ eyes are
3．Owls eat small animals like rabbits, mice,
4．Many people like to keep pigeons by the
5．Pigeons can send
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
