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Mum: Excuse me, is that a pen?
Seller: No, it isn't. It's a ball pen.
Mum: What's that over there(在那边)？
Seller: It's an umbrella (雨伞).
David : May I have a water bottle?
Mum: Sure. I'd like a water bottle, please.
Seller: OK, here you are.
Mum: Do you like the green pencil case?
David: No, I like that blue one.
( ) 1. Mum and David are in the bookshop(书店).
( ) 2. David wants a water bottle.
( ) 3. David likes the blue pencil case.
( ) 4. We can see an umbrella in the shop.
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
