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Mr. Black: It’s time to go, boys and girls. _________________________
Tom: No, John is not here. Look, he’s over there.
Mr. Black: ____________________ Is he running to us?
Tom: No, he is playing with Chen Jie.
Mr. Black: Go and tell him to come here, Tom. ( Tom runs to John and Chen Jie. )
Tom: John and Chen Jie, it’s time to leave now. ________________________
John: No, we are doing an experiment on insects.
Tom: ______________________________
John: Yes, they like it very much.
Tom: _____________________________
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
