学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.40
所属科目:小学英语
句型转换。
(1)They went to school. (变否定句)
They           to school
(2)This is your blue skirt. (改为同义句)
                                    
(3)That football is his.  (改为一般疑问句)
                                      
(4)This is Lin Tao’s coat.(改为否定句)
                                       
(5)They have lunch every day. (改为一般疑问句)
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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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