学进去-教育应平等而普惠
试题
类型:改错
难度系数:0.65
所属科目:小学英语
下列句子中均有一处错误,把正确的句子写在下面的横线上。
1.改错:The childs are having a running race in the playground.
______________________________________
2.改错:We should eat a lot of rices every day.
_______________________________________
3.改错:The students are from different country.
_______________________________________
4.改错:David's bag is heavier than Mike.
________________________________________
5.改错:I brush my tooth and wash my face in the morning.
_______________________________________
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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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