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Lucy 有很多动物朋友。她有两条鱼，一条是黑的，一条是黄的。他们没有腿也没有手臂，但是他们有着大大的尾巴。她有一只白色的兔子，它有一个短短的尾巴，它会跑。Lucy喜欢她的动物朋友。
Lucy 1． many animal friends. She has 2．. One is black and 3． is yellow. They have no 4．, but they 5．. She has a 6． rabbit, it has 7．, it 8．. Lucy loves her animal friends.
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
