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A: Mike, could you help me?
B:
A: Stay and clean the classroom.
B: Why me?
A:
B: That was before I knew what you wanted. Ask somebody else, please!
A: But you are the only one who has never done it.
B: Yeah, OK. You’re right. I’ll help.
A: We students should learn to serve our class.
B: I see. Thank you for your guide.
| A．But just now you said you’d help. |
| B．OK. What’s that? |
| C．Oh, sorry I can’t. |
| D．Just get Kate to do that. |
| E．It’s what I should do. |
| F．I don’t think it’s my turn. |
| G．I think you’re kind and helpful. |
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
