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Class: Good morning, Miss An.
Miss An: Don't sleep (睡觉) in class, Chen Yuan.
Chen Yuan: Yes, Miss An.
Miss An: Don't talk, Gao Han.
Gao Han: I'm sorry, Miss An.
Miss An: This schoolbag is for you, Yang Ling.
Yang Ling: Thank you.
1．Miss An is in the library.
2．They are in the classroom.
3．Chen Yuan talks in class.
4．The schoolbag is for Yang Ling.
5．Gao Han is late for class.
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
