学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
根据所听对话,选出表述正确的句子。(听两遍)
(     ) 1. A. Yes, there is.          B. No, there isn’t.        C. Yes, there are.
(     ) 2. A. It’s a house.            B. There’s a house.       C. This is a house.
(     ) 3. A. I have a fat body.     B. She has long hair.     C. He has big eyes.
(     ) 4. A. I like singing.          B. Yes, I do.                 C. Yes, I like.
(     ) 5. A. There are two.        B. I’m two year old.     C. They’re two yuan.
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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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