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An old lady was very deaf. She thought everything was too dear in the shop. One day, she wanted to buy a hat. She went into a shop and pointed to a hat and asked.
“How much is it?”
“Seven dollars, Madam,” the salesgirl answered. “It is very cheap.”
The old lady said, “Seventeen dollars? It is too expensive. If it is fourteen dollars, I will buy it.”
“Not seventeen dollars, Madam”, the girl said, “but seven.”
“It is still too expensive,” replied the old lady. “If it is five dollars, I will buy it.”
1．The old lady wasn’t deaf.2．The old lady thought the hat is cheap.
3．The hat is seven dollars.
4．The old lady bought the hat for fourteen dollars.
5．The old lady was clever.
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
