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| A．You are welcome. |
| B．Who’s that boy? |
| C．Yes, he is. |
| D．No, he isn’t. |
A：__1___
B: He’s my brother.
A: ___2___
B: She’s my mother.
A: Who’s that man? Is he your father?
B: ___3___
A: Is he your teacher?
B: ___4____
He’s my P.E. teacher.
A: Thank you for telling me.
B: ___5___
1._______ 2._______ 3.________ 4._______ 5._______
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
