Alice: Good morning, Ben.
Ben: Good morning,
Alice: What are you doing?
Alice: I am (1) p________ a building.
Ben: Oh, it’s very (2) t________. There are twelve floors.
Alice: Yes. Look. What is that?
Ben: It’s the (3) s________. It (4) r________ behind the building.
Alice: Can you see the building’s shadow?
Ben: Yes, I can. It’s long. It’s in front of the building.
Alice: What colour is the shadow?
Ben: It’s (5) b________

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

