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:0.65
所属科目:小学英语
听录音,选出你所听到的内容。
(        ) 1. A. spell             B. smell                    C. still
(        )2. A. anyone             B. anywhere             C. someone
(        )3. A. angry             B. hungry             C. library
(        )4. A. caught             B. cough                    C. called
(        )5. A. shall             B. show                    C. should
(        )6. A. through             B. throw                    C. snow
(        )7. A. protect             B. poster                    C. project
(        )8. A. fashion shows       B. paper shorts       C. plastic bags
(        )9. A. watch fireworks             B. light firecrackers             C. give red packets
(        )10. A. walk on             B. hold onto             C. go in
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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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