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:0.85
所属科目:小学英语
情景反应。听录音,选择正确的答语,每小题读两遍。
(     ) 1. A. She’s nice and kind.     B. Yes, she is.                    C. No, he’s young.
(     ) 2. A. Art and English.          B. We often read books.       C. In the classroom.
(     ) 3. A. Here you are.             B. I’d like some milk.          C. Have some orange juice.
(     ) 4. A. Salad.                       B. Fridays.                         C. Pears.
(     ) 5. A. Miss White.               B. Mike and John.               C. Amy and Wu Yifan.
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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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