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Hello, everyone. Welcome to our zoo. I’m David. I work in the zoo. I’m happy to be your guide (导游) today. The zoo is open from 8:30 a.m. to 5:30 p.m. There are many animals in the zoo. Some of them are big and strong. Some of them are small and cute. You will love them. Before we visit the zoo, let me tell you how to stay safe in the zoo.
First, please do not feed the animals.
Second, don’t climb the fence (围栏).
Third, don’t throw (扔) things at the animals.
Fourth, do not take photos near dangerous animals.
Safety first. Don’t forget. I hope you will have a good time in the zoo.
1．David works in the zoo.2．We can stay in the zoo from 8:30 a.m. to 5:20 p.m.
3．We can feed the animals in the zoo.
4．We can’t throw things at the animals in the zoo.
5．We shouldn’t take photos near dangerous animals in the zoo.
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
