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
句型转换。
1.There is a big fire in the forest.(根据划线部分提问)
___________________________
2.Please play with matches.(改成否定句)
___________________________
3.Fires can start in schools. (根据划线部分提问)
___________________________
4.You mustn’t play near fires in the kitchen.(换种表达,但意思不变)
___________________________
5.Trees and grass burn in the fire.(改成否定句)
___________________________
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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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