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1．当你的商店来了顾客，你看到顾客想要买东西，你该怎么说：_________ ( )
| A．How are you? |
| B．Nice to meet you, too. |
| C．What can I do for you? |
| A．What is it? |
| B．How much is it? |
| C．How many vegetables are there? |
| A．I want to go to Beijing. |
| B．I like Shanghai. |
| C．I am in Nanjing. |
| A．Stand up, please. |
| B．Sit down, please. |
| C．Good morning. |
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
