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. |
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同类型试题
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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
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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
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