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John has a parrot. It is a nice bird. Every day John says to it, "Hello! I can see you!". Soon the bird can say, "Hello I can see you." too.
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 has clever parrot.2．The parrot can't say a word.
3．The thief sees John and goes away.
4．The parrot can say "Nice to meet you".
5．John sees the thief.
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
