学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.65
所属科目:小学英语
听录音,选择正确的答语。
_____) 1. A. I go to school every morning. B. I climb mountains on the weekend. C. I'm watching TV.
_____) 2. A. I eat dinner at 6:00 p.m. B. I eat breakfast at 6:00 a.m. C. I eat dinner at home.
_____) 3. A. I like swimming.  B. I often swim on Sundays. C. I go swimming with Tim.
_____) 4. A. Great.  B. I live in Beijing.   C. No, I don't.
_____) 5. A. They are in the classroom.  B. I often go hiking. C. I like flying kites.
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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

用户名称
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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