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B: Hello, Cindy. Good morning.
A:
B:
A: I’m OK.
B: It’s a ruler
A:
B: R-U-L-E-R. What’s that in English?
A:
B: Spell it, please.
A: C-U-P.
| A．Spell it, please. |
| B．Good afternoon. |
| C．Good morning. |
| D．What’s this in English? |
| E．I’m fine, thanks. |
| F．It’s a cup. |
| G．Good evening. |
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
