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Hello! My name is Helen. I’m ten. It is warm today. I am at home. Yesterday (昨天), I wasn’t at home. My grandma and I were at the park. My grandma is very healthy. She will be 65 years old next year. She’s got short, white hair. She’s nice. My grandpa is in Shijiazhuang now. Shijiazhuang was a small village then. But now it is a big city. I like it very much.
1．It’s warm today.2．Helen was at home yesterday.
3．Helen’s grandma is 64 this year.
4．Helen’s grandma has got short, white hair.
5．Shijiazhuang was a big city then.
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
