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Mum: I'm here.
Tom:
Mum: It's half past six. It's time to get up.
Tom: But today is Saturday. We don't go to school.
Mum: Oh, sorry.
Tom: It's Daming's birthday today.
Mum: What will you buy for Daming?
Tom: I will buy a book about sports. He likes sports very much.
Mum: Good!
Tom: Thank you, Mum.
| A．You will be late for school. |
| B．You will have a good time. |
| C．What time is it now? |
| D．What will you do today? |
| E．I will buy a present for him. |
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
