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填写合适的数字。（每空填三个数字）
（1）Your grandfather is ill（病了）.What number do you need? _______
（2）A man is taking a woman’s bag without（没有）permission（允许）.What number do you need? _______
（3）You want to call Nanjing University（南京大学），but you don’t know the telephone number there.What number do you need? _______
（4）You want to go out this Sunday.But you are worried（担心）about the weather （天气）.What number do you need? _______
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
