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B: Good morning, Mr Green.
A:
C: OK, Mr Green.
A:
D: I’m sorry. I can’t find (找到) my rubber.
A: Here is a white rubber.
D: No. My rubber is black.
A: Is that your rubber?
D:
| A．Yes. It is my rubber. |
| B．Please close the door, Li Ming. |
| C．Don’t eat in class. |
| D．Is this your rubber? |
| E．Good morning, class. |
| F．Don’t talk, Amy. |
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
