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One day the fairy（精灵）queen, who lived above the sky, left 1． fairies to go down to earth. She went to visit a sick child. While she was away, the fairies 2． and played. When night drew near and she had not come back, they began to 3．.
One little fairy made a tiny 4． in the sky floor to peep（窥视）down to earth. She hoped to see the queen. Soon, many other fairies did the same. They did not know that the lights of Fairyland would 5． through these holes.
6． the queen was on her way back, she saw the holes in the sky floor. She found all the fairies peeping 7． them.
“Oh Queen,” they said, “you were such a long time away, we feared you were 8．.”
The queen smiled and said, “Those holes make the dark 9． look so pretty; I shall leave them just as they are.”
We 10． them stars, but fairies know that they are the lights of Fairyland.
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
