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学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.65
所属科目:小学英语
找出每个句子的答语。
A. Hi, Sam!
B. Good morning.
C. See you.
D. Yes, I am.
E. Hello, Tina.
F. No, I’m not. She’s my sister.
G. He’s my friend, too.
1.Are you Su Hai? (     )
2.Hello, I’m Sam. (     )
3.Good morning. (     )
4.Goodbye. (     )
5.Are you Wang Bing? (     )
6.Mike is my friend. (     )
7.This is Tina. (     )
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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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