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B: Good evening, young man. What’s the matter?
A: I don’t know.
B:
A: I helped my mother to carry many heavy boxes.
B:
A: In the afternoon,
B: You are too tired and have a cold.
A:
B: You should go to bed early tonight.
A: Thank you.
B: You’re welcome.
| A．I played football with my friend for three hours. |
| B．What should I do? |
| C．I’m not feeling well. |
| D．What did you do this morning? |
| E．What about this afternoon? |
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
