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Ben: Good morning. Can I help you?
Li Yan: Good morning! I want a bag. Do you have one?
Ben: Yes, I do. Here you are.
Li Yan: Thank you.
Dan: Hi, Anna! Can I help you?
Anna: I want a doll. Do you have one?
Dan: No, I don’t. But I have a ball. Do you like it?
Anna: No, thank you.
( )1. Ben and Dan are selling things in the store.
( )2. Li Yan wants a watch.
( )3. Dan doesn’t have a doll.
( )4. Ben has a bag.
( )5. Anna doesn’t like a ball.
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
