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John has a parrot.（鹦鹉） It is a nice bird. Everyday John says to it, “Hello! I can see you!” Soon the bird can say “Hello! I can see you!”One day John is at school. A thief （小偷）comes into John’s room. He wants to steal something. A voice comes, “Hello! I can see you!” The thief puts the things on the floor and runs away.
( ) （1） John is a policeman.
( ) （2） John has some birds.
( ) （3） The thief wants to take some things away from the room.
( ) （4） The bird can say some Chinese.
( ) （5） The thief sees John and goes away.
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
