学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.64
所属科目:小学英语
根据答句选择合适的疑问词。(How many、How old 、How 、where、what、when、How much )(8分)
(1)      does Jim go home?On foot.
(2)     are you going? To the cinema.
(3)      is your brother? He’s five.
(4)     is your grandma? She’s fine.
(5)     is the shirt? Twenty yuan.
(6)      children are there?Thirty.
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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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