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Yang Ling: Good morning, Helen.
Helen:
Yang Ling: No, I don’t.
Helen: I have some toy animals.
Yang Ling:
Helen: I have two toy dogs and four toy cats.
Yang Ling: Lovely.
Helen: OK. Here you are.
Yang Ling:
| A．How many toy animals do you have? |
| B．Thank you. |
| C．What do you have? |
| D．Good morning, Yang Ling. |
| E．Do you have any stickers? |
| F．Can I have a toy dog? |
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
