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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
