学进去-教育应平等而普惠
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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,根据所听句子,选择正确的答句。(听两遍)
(      )1. A. We have Music and PE.               B. Yes, we do.                            C. We like Music and PE.
(      )2. A. I have lunch at eleven.                 B. I have dinner at five.                 C. No. I don't.
(      )3. A. I go skating                                B. I go climbing.                         C. Yes, I do.
(      )4. A. Let's play.                                 B. It can move.                            C. My nose hurts.
(      )5. A. Take care.                                 B. OK. Thank you                         C. See you tomorrow.
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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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