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,根据问句选择正确的答句。
(     ) 1. A. Yes, I do.               B. Yes, I can.               C. No, I don’t.
(     ) 2. A. I can swim.            B. I like dogs.               C. I have an apple.
(     ) 3. A. No, thanks.            B. Yes, I do.                 C. I like a pie.
(     ) 4. A. I’m eleven.            B. I have eleven.            C. She’s eleven.
(     ) 5. A. Yes, he can.            B. No, she can’t.          C. No, I can’t.
(     ) 6. A. Yes, it is.               B. No, they aren’t.        C. They’re pears.
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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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