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Ken: Lily, it’s very hot today. Shall we go swimming in the lake near our school together?
Lily: OK.
Ken: OK.
Beside the swimming pool
Lily: Oh, I can’t walk. I am too full (饱) now. I had a big lunch today.
Ken: You can’t swim now if you are too full.
Lily: Stop!
Ken: OK, thank you.
Lily: You are welcome.
| A．You should stretch (伸展) your body before you swim. |
| B．But we can’t go swimming in the lake. |
| C．You may get sick. |
| D．Let’s tell our parents first. |
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
