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I’m Lanlan. I’m eleven years old. I live at No. 3 Park Street. I like running. I can run fast. I like swimming too. But I can’t swim fast. Taotao is my brother. He’s eight years old. He likes playing table tennis. And he can play well(好).
1．Lanlan is 8 years old.2．Lanlan lives(居住) at No. 3 Park Street.
3．Lanlan can swim fast.
4．Taotao is Lanlan’s(兰兰的) brother.
5．Taotao likes playing table tennis.
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
