搜索
Look! This is my new schoolbag. It’s big. It’s blue and white. I have an English book, a Chinese book, a maths book, three notebooks and a pencil box in it. In my pencil box, you can see a ruler, two pens, seven pencils and an eraser. Oh, where is my schoolbag? It’s on my chair.
1．My schoolbag is small. （2．I have three Chinese books. （
3．My pencil box is in my schoolbag. （
4．There are 6 pencils in the pencil box. （
5．The schoolbag is on the chair. （
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
