学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.65
所属科目:小学英语
Rewrite the sentences(按要求改写下列句子.每线一词)
1. The trees are green.(根据划线提问)
________the trees?   
2. It has a big head.(改为复数句)
________big________.   
3. The flower is white.(改为否定句,但意思不变)
The________.   
4. This is a tall plant.(根据划线提问)
________this?
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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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