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George: Hello, Jack! Welcome to my farm.
Jack: Oh, your farm is so big.
George: Yes, they are.
Jack: How many hens do you have?
George:
Jack:
George: No, we don’t. But we have cows.
Jack:
George: They are potatoes. Do you want to eat them?
Jack:
George: Great! Let’s have potatoes for dinner today.
| A．We have thirty. |
| B．Yes, I do. |
| C．What are these? |
| D．Are they hens? |
| E．Do you have horses? |
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
