It is seven o’clock in the morning. My classmates and I are on our way to school. The girl with a schoolbag on her back is Linda, She is good at riding a bike,
The girl is Ellen. She is wearing a red sweater and a yellow skirt today. She walks to school every day.
My best friend Bob is in the bus. He is with me now. He is wearing a cap.
Look! Who is in the plane? That’s my father, Mr Green. He is going to Beijing. "China is Great!" he often tells me.
My grandparents will come to visit us today. They are on the train now. My mother will pick them up at the train station.
Where is my sister Kate? She’s in my uncle’s car. "It’s fast and safe," she says. My name is Jim. Where am I?
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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