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Lucy: Oh, mum! You are back!
Mum: Yes. I miss you very much.
Lucy: I miss you too.
Mum:
Lucy: I went to the supermarket with my father.
Mum:
Lucy: We bought some chocolate.
Mum: Oh!
Lucy: We bought half a kilo.
Mum: Can I have some chocolate?
Lucy: Sorry, mum.
Mum: It's bad for your teeth (牙齿).
Lucy: Sorry, mum.
| A．I ate it all. |
| B．What did you do today? |
| C．Don't eat too much chocolate. |
| D．What did you buy? |
| E．How much chocolate did you buy? |
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
