搜索
Kim: Hello, John!
John: No, it’s a donut.
Kim: What would you like to eat?
John:
Kim: I’d like a donut, too. Let’s buy some donuts.
John: Okay! Let’s go!
Kim: How much is one donut?
Assistant(售货员):
Kim:
Assistant(售货员):
| A．One yuan. |
| B．I’d like a donut. |
| C．Is this a hot dog? |
| D．You’re welcome. |
| E．I’ll take two, please! |
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
