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（ ）1. A long time ago, there lived a very rich shoemaker.
（ ）2. The customer liked the shoes very much, but he did not buy them.
（ ）3.The shoemaker and his wife decided to stay up and see who helped them make shoes.
（ ）4.The shoemaker and his wife made some beautiful shoes for the elves.
（ ）5.After the shoemaker became rich, he helped his neighbours.
（ ）6. There lived a pretty princess, and she only liked beautiful things.
（ ）7. The princess did not like ugly frog, so the frog didn’t follow her.
（ ）8.At last, the ugly frog became a handsome prince, and they lived happily together.
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
