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,选出你听到的单词或短语,每道小题读两遍。
(     ) 1. A. coat             B. cold             C. cool
(     ) 2. A. sunny             B. snowy             C. shirt
(     ) 3. A. music             B. mine             C. more
(     ) 4. A. warm             B. windy             C. world
(     ) 5. A. carrot             B. cow             C. cheap
(     ) 6. A. sale             B. size             C. sock
(     ) 7. A. pants             B. pretty             C. pack
(     ) 8. A. course             B. clothes             C. computer
(     ) 9. A. get up             B. go home       C. go to bed
(     ) 10. A. be careful       B. be hurry       C. just a minute
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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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