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Ben: 1．
Janet: Happy birthday to you, Ben. This pen is for you.
Ben: 2．
Janet: Wow, there is a big birthday cake! 3．
Ben: Sorry, you can't. We must wait a minute.
Janet: Can I have some milk?
Ben: 4． Here you are.
Janet: Thanks. 5．
Ben: There are ten. I'm ten years old.
| A．How many candles are there? |
| B．Can I have some cake? |
| C．Come in, please. |
| D．Yes, of course. |
| E．Thank you. |
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
