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Mike: Good morning, Amy.
Amy: Let' s clean the classroom.
Mike: Good idea!
Amy: Look! This is my new schoolbag.
Mike: Wow! It's nice.
Amy:
Mike: It' s red, black and white.
Amy: May I see it?
Mike:
Amy: Your schoolbag is heavy.
Mike: One pencil box, two pencils and ten books.
| A．I have a new schoolbag, too. |
| B．What's in it? |
| C．Let me clean the door. |
| D．Sure. Here you are. |
| E．What colour is it? |
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
