I am Jack Brown. I’m an American boy from New York. I study in Jinling Primary School now. My father is an engineer(工程师). My mother is a maths teacher. I have many friends in China.
My favourite festival is Christmas Day. Last Christmas Day, I opened the presents under the Christmas tree. Dad gave me a telescope(望远镜). That is my favourite present. And I got a calculator(计算器)from my mum. From my grandpa and grandma, I got some stamps and a yo-yo. And we had a good time that day.
1.Jack is an American boy.2.Mr. and Mrs. Brown are teachers.
3.Jack doesn’t have any friends in China.
4.Jack’s favourite present is the yo-yo.
5.They had a good time last Christmas Day.
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同类型试题
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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
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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
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