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A: How much is one donut?
B: Five yuan.
A: I’ll take three, please. How much is one hamburger?
B: Ten yuan.
A: I’ll take two, please. How much is one hot dog?
B: Seven yuan.
A: I’ll take one, please.
B: Forty-two yuan, (42元) please.
A: Here you are.
| | donut | Hot dog | hamburger | Total(总计) |
| How many | （1）_____ | （2）_____ | （3）_____ | six |
| How much | （4）_____ | （5）_____ | （6）_____ | Forty-two |
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
