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Which is my pencil case?
A: Excuse me, what are you looking for?
B: My pencil case. Where is it?
A: Is it in your desk?
B: No, it isn't. It's Lucy's.
A: Is it under your desk?
B: No, it isn't. It's Ann's.
A: Is it next to the chair?
B: Let me see. Err, no, it isn't. It's David's.
(1)The children are looking for a pencil case.(2)There is a pencil case in the desk.(3)A's pencil case is under the desk.(4)A's pencil case is next to 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
