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,选出听到的单词。   
(      ) 1. A. school                          B. subject                           C. Science
(      ) 2. A. Maths                           B. many                                  C. Monday
(      ) 3. A. fan                                 B. fun                                 C. fly
(      ) 4. A. see                                 B. sit                                  C. six
(      ) 5. A. aren’t                           B. Art                                  C. can’t
(      ) 6. A. Music                           B. make                                  C. milk
(      ) 7. A. listen                          B. let                                C. lesson
(      ) 8. A. welcome                    B. come                                  C. color
(      ) 9. A. back to                          B. go to                                C. Me too
(      ) 10. A. Chinese                    B. sandwich                         C. table tennis
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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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