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Dick: Hi, Sue.
Sue: Oh, Dick. Where are you now?
Dick:
Sue: Park? Super! What are your parents doing?
Dick:
Sue: What about your sister?
Dick: She is flying a kite.
Sue: Wow!
Dick: Of course. Some children are boating (划船) on the lake.
Sue: It sounds great.
Dick: Sure.
Sue:
Dick: Thank you. Bye.
| A．Is there a lake in the park? |
| B．Can you take some photos for me? |
| C．They are playing table tennis. |
| D．Have a good time! |
| E．In the park with my family. |
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
