学进去-教育应平等而普惠
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类型:完形填空
难度系数:0.64
所属科目:小学英语
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Welcome 1 my home. I have four 2 . I like my bedroom very much. You can 3 a window, a door, a desk, a bed and two chairs. My desk is white and my 4 are blue. I go to sleep 5bed. I like my room. It is nice.
(   ) 1. A. in       B .on      C.to       D. at
(   ) 2. A. rooms    B. tables     C schools    D. classroom
(   ) 3. A. get       B watch    C. see        D. hear
(   ) 4. A. a chair    B. chairs     C chair     D. chaires
(   ) 5. A. at     B. in     C. on      D. to
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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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