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A: I need help, sir!
B: What’s the 1．, madam?
A: My son got lost 2． we were in the shopping center. I’ve looked 3． him everywhere, but I can’t find him. What shall I 4．?
B: Don’t worry. But you have to 5． a few questions. First, how old 6． he?
A: He’s six years old.
B: What 7． your son look like?
A: He’s thin and tall with big eyes.
B: What’s he wearing?
A: He’s wearing a white T-shirt 8． blue jeans.
B: OK. We’ll call you as soon as we 9． him.
A: Thank you, sir.
B: You’re 10．.
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
