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:0.65
所属科目:小学英语
听录音,将你听到的单词的序号填到括号中。
(        ) 1. A. young                    B. yellow                      C. yummy
(        ) 2. A. sorry                      B. sunny                      C. speak
(        ) 3. A. rainy                      B. windy                       C. cloudy
(        ) 4. A. Thursday                 B. Saturday                    C. Sunday
(        ) 5. A. science                  B. maths                         C. Chinese
(        ) 6. A. meat                      B. beef                           C. feet
(        ) 7. A. flower                    B. food                         C. fruit
(        ) 8. A. fresh                       B. healthy                    C. funny
(        ) 9. A. hungry                    B. happy                       C. every
(        ) 10. A. water                    B. what                         C. where
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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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