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
听音,选出你听到的单词,把序号填在题前括号内。读两遍。
(      ) 1. A. leaves       B. left       C. love
(      ) 2. A. July 1st       B. April 1st       C. June 1st
(      ) 3. A. him       B. his       C. he
(      ) 4. A. three       B. third       C. thirteen
(      ) 5. A. always       B. often       C. sometimes
(      ) 6. A. week       B. weekend       C. watching
(      ) 7. A. shopping       B. swimming       C. singing
(      ) 8. A. when       B. where       C. what
(      ) 9. A. May       B. match       C. March
(      ) 10. A. think       B. trunk       C. pink
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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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