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
Listen and choose (听录音,选择听到的单词或字母。)
(      ) 1. A. bag                         B. book                         C. dog                       
(      ) 2. A. ear                           B. eye                         C. egg                    
(      ) 3. A. hello                       B. hi                            C. hand
(      ) 4. A. brown                         B. black                       C. body
(      ) 5. A. Miss White               B. Mr Jones                  C. Miss Green
(      ) 6. A. good morning            B. good afternoon          C. goodbye
(      ) 7. A. he                                  B. head                       C. how
(      ) 8. A. green                       B. great                       C. good     
(      ) 9. A. face                         B. leg                           C. foot                        
(      ) 10. A. DGE                      B. BGF                       C. CFG
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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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