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Hello, my name’s Tom. I’m tall and strong. This is my new friend. Her name is Li Xin. She is short and thin. She has a new schoolbag. It’s blue and white. There is an English book, a Chinese book, a math book, three notebooks and a pencil-box in it. Li Xin likes it very much. Where is her schoolbag? It’s on the teacher’s desk.
1．Tom has a new schoolbag.2．Li Xin is tall and strong.
3．There are three storybooks in Li Xin’s schoolbag.
4．Li Xin’s schoolbag is on the teacher’s desk.
5．The schoolbag is blue and white.
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
