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,选出你所听到的单词,将序号填入题前括号里。
______) 1. A. bus               B. buy                   C. bike
______) 2. A. our               B. farmer                   C. flower
______) 3. A. boat               B. goat                   C. coat
______) 4. A. plane               B. play                   C. please
______) 5. A. feel               B. fever                   C. favourite
______) 6. A. head               B. help                   C. high
______) 7. A. tree               B. street                   C. three
______) 8. A. Mr               B. Mrs                   C. Miss
______) 9. A. want               B. wash                   C. watch
______) 10. A. class               B. clean                   C. clothes
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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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