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Hello, I am Lisa. I have got a new schoolbag. It’s pink. I like pink very much. There is a purple pencil case and five books in it. I like reading. I have got four pencils, a pen, two rulers and two erasers. The pencils and erasers are green. The pen is blue. And there is a cat on it. The rulers are white. I like my new schoolbag.
1．I have got a new schoolbag.2．The pencil case is pink.
3．I have got 4 pencils, 1 pen, 2 rulers and 2 erasers.
4．The pencils are blue.
5．There is a cat on the pen.
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
