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In the old days, there was a monster. It was Nian. Everyone was afraid of it,
Spring was coming. Nian went to a village at night. It ate many animals.
One day, an old man came to the village. “Don’t be afraid. I have an idea.” he said. He put up a couplet on the door and set off fireworks. People followed him.
Nian came again. It saw the red couplets and heard the fireworks. It was afraid and ran away. Everyone was happy again. From then on, they put up couplets and set off fireworks on that day every year. The day was named Nian.
1．Nian was a monster in the old days. （_________）
2．People weren’t afraid of Nian. （_________）
3．Nian was afraid and ran away. （_________）
4．From then on, people put up pictures on the door. （_________）
5．People put up couplets and set off fireworks on Nian. （_________）
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
