学进去-教育应平等而普惠
试题
类型:对划线部分提问
难度系数:0.65
所属科目:小学英语
句型转换。
1.Please draw a picture now. (改为否定句)
Please ______ a picture now.
2.These are cameras. (改为单数句)
______ ______a ______.
3.Feed the cat, please. (改为否定句)
______  ______ the ______, please.
4.This is a fountain. (改成复数句)
_____________________.
5.The books are on the desk. (根据划线提问)
______ _______the books?
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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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