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Hello, my name is Sam. I am a happy boy. Look at me. I have a big mouth and two big eyes. I’m 6 years old. I like black very much. I have a black pencil, a black eraser and a black ruler. And I like animals(动物) very much. Today is my birthday. I got a gift. What’s in it? Look! Three pink pigs. How funny!
1．Sam is a happy boy.2．Sam has a big mouth and two big eyes.
3．Sam is 6 years old.
4．Sam likes pink very much.
5．Sam has two pink pigs.
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
