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
听辨字母和单词。将你所听到的字母或单词的序号填在题前括号内。
(     ) 1. A. X                            B. Z                           C. F
(     ) 2. A. b                            B. d                            C. q
(     ) 3. A. j                            B. l                              C. g
(     ) 4. A. TV                         B. MV                         C. WC
(     ) 5. A. UFO                       B. GPS                       C. USA   
(     ) 6. A. breakfast                  B. lunch                      C. dinner
(     ) 7. A. outside                    B. inside                       C. side
(     ) 8. A. music                       B. milk                       C. next
(     ) 9. A. snowy                      B. sunny                       C. Sunday
(     ) 10. A. weather                  B. world                       C. windy
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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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