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。
(       ) 1. A. plane               B. play               C. please
(       ) 2. A. clever             B. clock               C. clean
(       ) 3. A. green               B. grow             C. grass
(       ) 4. A. bread             B. brown             C. brother
(       ) 5. A. lunch             B. fish                 C. sheep   
(       ) 6. A. cheap             B. fresh               C. chair
(       ) 7. A. three               B. that               C. there
(       ) 8. A. thin               B. thank               C. this
(       ) 9. A. think             B. pink               C. drink
(       ) 10. A. whole             B. whose            C. what
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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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