学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.85
所属科目:小学英语
听录音,选出你所听到的单词、短语或句子。读两遍。
(     ) 1. A. big       B. bed       C. baby
(     ) 2. A. hat       B. hot       C. has
(     ) 3. A. lake       B. line       C. let
(     ) 4. A. ride       B. rice       C. rain
(     ) 5. A. party       B. phone       C. photo
(     ) 6. A. work       B. winter       C. white
(     ) 7. A. short       B. sleep       C. sport
(     ) 8. A. go shopping       B. go skating       C. go swimming
(     ) 9. A. look at       B. put on       C. come back
(     ) 10. A. I like apples.        B. I like pears.        C. I like bananas.
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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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