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Yifan: Hi, Tom. I’m going to the bookstore.
Tom:
Yifan: I’m going to buy a new a comic book. Do you know the way?
Tom: Yes, I know. It’s not far from here. You can go on foot.
Yifan: Oh, thank you very much. Bye.
Tom: Hey.
Yifan: Oh, right!
| A．What are you going to buy? |
| B．Turn right at the hospital. |
| C．I must pay attention to the traffic lights. |
| D．Don’t go at the red light! |
| E．Where are you going? |
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
