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,选出你所听到的选项。
(      ) 1. A. bed             B. bde                 C. bix
(      ) 2. A. JDY             B. JRT               C. JDP
(      ) 3. A. mjl               B. nje                 C. nke
(      ) 4. A. sos               B. syz                 C. sux
(      ) 5. A. EID               B. EFG             C. EWF
(      ) 6. A. red               B. brown             C. orange
(      ) 7. A. bag               B. black               C. bread
(      ) 8. A. dog               B. duck               C. egg
(      ) 9. A. hello             B. morning          C. hi
(      ) 10. A. ear               B. face               C. leg
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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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