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Nick: Hello, Betty!
Betty:
Nick: I’m at the zoo.
Betty:
Nick: I’m watching the animals.
Betty: Really?
Nick: Elephants.
Betty:
Nick: Because they are very cute.
Betty:
Nick: Yes. I can see a mother elephant and a baby elephant.
Betty: Have a good time!
Nick: Thank you.
| A．Why do you like them? |
| B．Do you see any elephants? |
| C．What are you doing? |
| D．What’s your favourite animal? |
| E．Where are you? |
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
