学进去-教育应平等而普惠
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类型:填内容补全对话
难度系数:0.65
所属科目:小学英语
about     flew     meet     proud     someday     video     in     then     famous     still

My father, Yang Liwei, is a taikonaut, and he is very 1.. 2. October 2003, my father 3. into space in ShenzhouV. He spent 4. twenty-one hours in space. He did a lot of work there. He also made a 5. in space. 6. he came back to the earth.

My mother and I went to the airport to 7. my father. We were very happy. It was a great day! I was very 8. of him. Now he 9. tells me about his space travel. I want to go into space 10. too.

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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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2019-09-19

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

用户名称
2019-09-19
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