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A: Hello, House of Dumplings.
B: Yes, please. I want to order some dumplings.
A:
B: I’d like some beef dumplings. Are there any vegetables in the beef dumplings?
A:
B: Good. I’d like 15 beef dumplings with carrots.
A: All right. What else?
B: Umm … a large bowl of tomato soup, please.
A: OK. 15 beef dumplings with carrots and a large bowl of tomato soup. That’ll be 35 yuan.
B: 20 Bridge Street.
A: OK. You may wait for half an hour.
B: It doesn’t matter. See you then.
A:
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
