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,听两遍。
(      ) 1.A. happy                    B. hungry                       C. angry
(      ) 2.A. house                    B. horse                         C. home
(      ) 3.A. music                    B. museum                       C. maths
(      ) 4.A. cloud                    B. cloudy                       C. clouds
(      ) 5.A. little                  B. litter                       C. let
(      ) 6.A. where                       B. were                           C. there
(      ) 7.A. quick                    B. quiet                         C. quickly
(      ) 8.A. lost                      B. lose                           C. lots
(      ) 9.A. hear                      B. here                           C. hair
(      ) 10.A. look at               B. look out of               C. look at
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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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