学进去-教育应平等而普惠
试题
类型:词汇选择题
难度系数:0.65
所属科目:小学英语
读句子,选出与划线单词是同类的选项。
1.I brought a shirt to my mother. (     )
A.didB.doC.does
2.It’s a windy day. (     )
A.rainB.sunC.rainy
3.My brother is a driver. (     )
A.floorB.teacherC.bus
4.My shorts are dirty. (     )
A.cleanB.wordC.there
5.Sunday is the first day of the week. (     )
A.sadlyB.happyC.fifth
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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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