学进去-教育应平等而普惠
试题
类型:书面表达
难度系数:0.94
所属科目:小学英语
按要求写句子
(1)I  He cooks Chinese food on the weekend.    (改为一般疑问句)
                                        
(2)should  You  breath  take  a  deep    .(连词成句)
                                        .
(3)Does your brother come to school on foot?(作否定回答)
                                       .
(4)Open the door.(改为否定句)
                                       .
(5)He worksin a hospital.(对划线部分提问)
                                        
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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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