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
听音,选出你听到的字母、数字或单词。
(     ) 1. A. ME          B. NO            C. CD            D. MD
(     ) 2. A. EN            B. LI             C. NG          D. GN
(     ) 3. A. MIC          B. UFO          C. CBA        D. NBA
(     ) 4. A. 124            B. 357            C. 961          D. 743
(     ) 5. A. 7536          B. 9517          C. 4832        D. 3954
(     ) 6. A. 12398        B. 35498        C. 24786        D. 27634
(     ) 7. A. hello          B. look          C. great            D. good
(     ) 8. A. five            B. four            C. foot            D. face
(     ) 9. A. my             B. your          C. you            D. me
(     ) 10. A. nice          B. new            C. cool          D. fun
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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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