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

1.It is ______. (       )
A.New Year’s DayB.Tina’s birthdayC.Christmas(圣诞节) Day
2.There are ______ members(成员) in Bobby’s family. (       )
A.3B.4C.5
3.Bobby’s gift is ______. (       )
A.smallB.bigC.not nice
4.Father and Mother love ______. (       )
A.BobbyB.TinaC.Bobby and Tina
5.This is a ______ family. (       )
A.happyB.newC.not happy
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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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