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Look at the picture. It’s my classroom. You can see a door, two blackboards, six windows, eight lights, many desks and chairs. The door is green. And the windows are blue. You can see the lights are white. The desks and chairs are yellow. You can see a teacher’s desk too. It is brown. What’s on the teacher’s desk? It’s a computer. It’s black.
1．I have a new classroom.2．We have eight lights in the classroom.
3．We have two windows.
4．We have a brown teacher’s desk.
5．The computer is on the teacher’s desk.
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
