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My name 1． Lily. I am eleven. I’m a new student in Class Six, 2．, No.2 Middle School. My teacher is Miss Gao. She is 3．. But I’m 4． American girl. I have a sister. 5． name is Lucy. We are twins. I am 6． duty this morning. I can’t look 7． my sister. At school I help my teacher put books, maps and pictures on her 8．. I tell my teacher, “Everyone is here.” But I am 9．. Jim is not at school. I don’t 10． where he is. I think he is at home.
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
