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Nancy goes out after lunch. She comes in a shop. A salesman says to her, "Can I help you?"
"Yes, please." says Nancy, "I want a hat."
The salesman shows some hats to her. She feels warm in the shop and puts her hat on the counter (柜台). She thinks some of them are expensive. And she doesn't like the others' colours. She chooses and chooses. At last she sees a red hat and says, "Well, I'll take this one."
"But, it's yours!" says the salesman.
1．Nancy comes into a hotel.2．Nancy puts her hat on the counter.
3．She thinks some hats are expensive.
4．The red hat is Nancy's.
5．Nancy buys a hat.
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
