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. first                    B. second                           C. third
(     ) 2. A. hungry                    B. happy                           C. hole
(     ) 3. A. music room             B. art room                    C. computer room
(     ) 4. A. library                    B. classroom                    C. playground
(     ) 5. A. stop                    B. play                           C. push
(     ) 6. A. go to play             B. go and play                    C. come to play
(     ) 7. A. so heavy             B. too heavy                    C. very heavy
(     ) 8. A. in the UK             B. in the US                    C. in the PRC
(     ) 9. A. time for dinner       B. time for school             C. time for class
(     ) 10. A. any art rooms       B. some art rooms             C. an art room
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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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