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
听录音,选择正确的答语。将其序号写在题前括号内,每小题读两遍。
(      ) 1. A. His name is Peter             B. Her name is Nancy.        C. He is Tom.
(      ) 2. A. He’s my uncle.                 B. She’s my aunt.               C. She’s my sister.
(      ) 3. A. She's a worker                 B. No, she isn't.                  C. He’s an actor.
(      ) 4. A. I want to be a doctor.        B. She’s an actress.             C. No, she’s a nurse.
(      ) 5. A. I live on Heping Road.       B. Yes, I’d like to.               C. They live near each other
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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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