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或短语。(听两遍)
(       )1. A. happy                           B. hungry                           C. hurry
(       )2. A. what                              B. water                            C. watch
(       )3. A. speak                            B. spring                            C. stand
(       )4. A. Mr                                B. Mrs                                C. Miss
(       )5. A. sad                                B. tired                                C. see
(       )6. A. feel thirsty                      B. on Thursday                      C. these pies
(       )7. A. come here                       B. a little bear                       C. dear teacher
(       )8. A. on the hill                       B. fly kites                            C. feel ill
(       )9. A. my nose                           B. my baby                           C. my home
(       )10. A. have a cake                    B. have some water                 C. take this pill
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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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