学进去-教育应平等而普惠
试题
类型:排序题
难度系数:0.65
所属科目:小学英语
句子排排队。(在正确的句子排序前打对勾,使其连成通顺的对话)
1. I’m from China.
2. Where are you from?
3. I know China. It is a beautiful country.
4. I’m from the USA. And you?
5. Hello, Mike. Nice to meet you.
6. Hi, Tom. This is Mike.
7. Welcome to our country.
8. Nice to meet you, too.
9. Thank you!
(    ) A.
(    )
A.
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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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