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| A. Here you are. B. Do you like it? C. How much is it? D. I like blue. E. I won’t take it. |
Ben: No, I don’t like purple. 2．
Salesgirl: Here is a blue one. Do you like it?
Ben: Very nice. 3．
Salesgirl: It’s 380 yuan.
Ben: That’s too expensive.4．
Salesgirl: What about this blue coat? It’s 120 yuan.
Ben: Oh, it’s good. I will take it.
Salesgirl: 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
