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,根据所听到的问题,选择正确的应答句。(听两遍)
(     ) 1. A. Yes, please.                                B. Yes, I have.        C. Yes, I do.
(     ) 2. A. Yes, I can.             B. No, I can’t.            C. Yes, I’d like a hamburger.
(     ) 3. A. It’s ten yuan.          B. They’re ten yuan.            C. I’d like ten.
(     ) 4. A. It’s cool.                 B. Yes. It’s nice.   C. How nice!
(     ) 5. A. She’s in the bedroom.   B. He’s at home.               C. It’s in the living room.
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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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