ask, ride, have, help, make, congratulate, play, run, raise, happen, bring |
During the Warring States Period, there was an old man named Sai Weng. He lived with his son near China’s northern borders and he
One day, a servant (仆人) said to Sai Weng sadly, “One of our horses has gone missing.” After hearing this news, his neighbours came to comfort (安慰) him.
However, he said: “Maybe it’s not a bad thing. Who knows what
A few months later, when the servant was cleaning the horse farm, a strange thing happened. “Look! Our horse
Sai Weng’s son was crazy about horses. So he spent a lot of time
Hurting legs was a bad thing, but he thought it might become a good thing. So many people didn’t understand.
One year later, the Hun soldiers invaded (入侵). All young men
Under certain conditions, good things and bad things can be exchanged. Bad things can become good things, good things can become bad things.
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