学进去-教育应平等而普惠
试题
类型:选内容补全对话
难度系数:0.65
所属科目:小学英语
读一读,选择合适的句子,完成对话
A. How much is it? B. I'll take it. C. How old is your son?
D. Can I help you? E. Do you like this one?
Shop assistant: 1.
Mrs Black: I want a new T-shirt for my son.
Shop assistant: 2.
Mrs Black: He’s ten years old.
Shop assistant: 3.
It 's' nicc and it's on sale(打折).
Mrs Black: 4.
Shop assistant: It's 40 yuan now.
Mrs Black: 5.
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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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