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My name is Zhang Kai. I’m ten. I have a new schoolbag. It’s big and heavy. There is a Chinese book, a maths book, an English book and six storybooks in it. There is a pink(粉红色的) pencil box in it. My schoolbag is black and white. How nice it is!
1．Zhang Kai is ten.2．Zhang Kai has a new pencil.
3．There is one book in Zhang Kai’s schoolbag.
4．Zhang Kai’s pencil box is pink.
5．Zhang Kai’s schoolbag is nice.
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
