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Hello, I’m Lucy. I’m in the classroom. An exercise book is in my hand. A Chinese book is in the desk. And a pencil-box is on the desk. A ruler is in the pencil-box. An English book is on the chair. A notebook is in my bag. And a storybook is in my bag, too.
1．Lucy is in the classroom.2．An exercise book is in Lucy’s hand.
3．A Chinese book and a storybook are on the desk.
4．A pencil-box is on the desk.
5．A storybook and a notebook are in Lucy’s bag.
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
