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Helen: Hi, David! This is helen. This Saturday is my birthday.
David: OK, great.
Helen: My mum will come to pick you up.
David: Thanks.
Helen: It’s about half past five.
David: That’s good. Can you come to my place now? I am reading an interesting book.
Helen:
David: OK. See you.
Helen: See you then.
| A．Sorry, I have to do my homework now. |
| B．Can you come to my place? |
| C．Who’s speaking? |
| D．What time is it? |
| E．How can I get to your place? |
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
