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I’m Sally. I am Amy’s friend. I’m from Houston in the US. Houston is a very big city and I live in the south. I’d like to introduce (介绍) my family to you. My father is a policeman. He works day and night. My mother is a librarian. She likes books very much. I’ve got a brother, Tim. We are in the same school, but we are in different grades. Could you be my pen friend? I will visit China next year.
Best,
Sally
1．This letter is from the US.2．Sally lives in the south of Houston.
3．Sally’s father likes books very much.
4．Sally and Tim are in the same grade.
5．Sally wants to make pen friends with Lingling.
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
