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It’s September 1st. It’s the first day of school. Children are back at school.They can see many friends and teachers. They are very happy. Miss Li is their new teacher. She is tall and beautiful. She will teach them English. Today is Linlin’s birthday. She is so surprised, because everyone gives her a gift. Mike is sad, because his new English book is missing. All the children look for it together. Oh it’s in Mike’s bag.
1．Why are they happy?2．Who is Miss Li?
3．Why is Linlin so surprised?
4．Why does Mike look so sad?
5．Where is Mike’s English book?
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
