学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
选择与句子内容相符的图片,将序号填在括号内。
1.It cannot fly without wind. (   )
A.B.C.
2.It’s dark in the room. But I want to read my book. I should turn on the light. (   )
A.B.C.
3.You get a gift, and you like it very much, so you are happy. (   )
A.B.C.
4.You have a new watch. It’s round in shape and blue in colour. (   )
A.B.C.
5.In art class, you want to drew a bird but you don’t have crayons. (   )
A.B.C.
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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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