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Long ago(从前) there was an old man. He lost his horse one day. People came to comfort(安慰) him. The old man said “Why can’t that be a good thing?” After a few months, the horse came back. People came to congratulate(祝贺) him. The old man said, “Why can’t that be a bad thing?”
His son liked riding. But he fell off his horse and could not walk. People came to comfort the family. The old man said “Why can’t that be a good thing?” After a year, many people went to war(战争). Most of them were dead(死亡). His son didn’t fight because of his lame(瘸的，跛的) leg, and his father and son were safe.
1．An old man lost his horse one day.2．After a few months, the horse didn’t come back.
3．His son liked riding.
4．The old man went to war.
5．The old man and his son were safe.
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
