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,选出你所听到的内容。听两遍。
( ) 1. A. friend                 B. eight                  C. afraid
( ) 2. A. beside                 B. behind               C. between
( ) 3. A. hungry               B. angry                 C. worry
( ) 4. A. hot                    B. soft                    C. hat
( ) 5. A. round                 B. around               C. ground
( ) 6. A. music room        B. art room             C. classroom
( ) 7. A. Soup!                 B. Stop!                  C. Stand!
( ) 8. A. right                  B. really                 C. ready
( ) 9. A. foot                  B. finger                 C. feet
( ) 10. A. reading            B. eating                 C. sitting
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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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