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A rich man decide(决定)to give his mother a birthday present. “My present will be better than any of my brother‘s, “he thought. He heard about an amazing(令人惊异)bird. The bird could speak five languages(语言).He bought the bird at once and sent it to his mother. It cost(花费)him 100 yuan. The day after her birthday, he called his mother. “How did you like the bird, mother?” he asked eagerly(亲切地).His mother answered“delicious!”
（1）The rich man bought his mother a birthday present.
（2）The rich man had only one brother.
（3）The rich man gave his mother a cheap (便宜)present.
（4）The bird was very dear.
（5）From the story we know the rich man’s mother ate the bird.
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
