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Hello, I’m Amy. I’m nine years old. I have a happy family. This is my father, Tom. He’s very clever. This is my mother, Mary. She’s very nice. Her hair was long then. Now her hair is short. This is my grandma, Alice. She is old now. She was a teacher then. This is my grandpa, John. He was a doctor then. I love my family.
1．Amy is ten years old.2．Mary is nice. Her hair was short then.
3．Her grandma is old now.
4．John was a teacher then.
5．Amy loves her family.
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
