学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.65
所属科目:小学英语
按要求写句子。
1. They checked their birthday on by one.(写出问句)
                                           _                                           
2. They were in school.(改为一般疑问句)
                                          ___                                        
3. My mother gave to me two storybooks.(改为否定句)
                                          ____               
4. My birthday is September 4th.    (就划线部分提问)        
                                          ____
5. He walks to school every day.(用yesterday代替 every day)   
                                               
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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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