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学进去-教育应平等而普惠
试题
类型:阅读选择
难度系数:0.65
所属科目:小学英语



1.Whose family photo is this?(这是谁的家庭照片?) (  )
A.Lingling’s.B.Sam’s.C.Daming’s.
2.Who is she? (  )
A.She is Sam’s mother.B.She is Sam’s teacher.C.She is Lingling’s mother.
3.Who are they? (  )
A.They are Lingling’s grandma and grandpa.B.They are old.C.They are Sam’s grandma and grandpa.
4.Is this Sam? (  )
A.Yes, it is Sam.B.No, it is Tom.C.Yes, it is Lingling’s brother.
5.How many family members did Sam introduce?(Sam介绍了几位家庭成员?) (  )
A.Four.B.Five.C.Six.
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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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