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| A. Good morning. B. Hello, Yang Ling. C. No, I’m not. D. Good morning, Tim. E. Hi, Bobby. F. Yes, I am Su Hai. G. Hello, Su Hai. H. Good afternoon, class. |
1．Are you Mike?
2．Hello. I’m Su Hai.
3．Hi, Sam.
4．Good afternoon, Miss Li.
5．This is my brother, Tim.
6．She is my sister, Yang Ling.
7．Are you Su Hai?
8．Good morning, Helen.
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
