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:0.94
所属科目:小学英语
听录音,选出你所听到的内容,将序号填入题前括号内。
(     ) 1. A. jbg                                 B. bgj                                    C. bjg
(     ) 2. A. hello                                 B. hi                                   C. I
(     ) 3. A. she                                  B. he                                C. yes
(     ) 4. A. am                                   B. I’m                            C. Sam
(     ) 5. A. my                                   B. me                                C. you
(     ) 6. A. class                                  B. he’s                              C. Miss
(     ) 7. A. is                                      B. this                           C. yes
(     ) 8. A. morning                            B. afternoon                  C. evening
(     ) 9. A. father                            B. mother                           C. brother
(     ) 10. A. family                            B. friend                           C. father
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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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