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. really                   B. finally                   C. usually
______) 2. A. stop                   B. help                   C. group
______) 3. A. teach                   B. teacher               C. teaches
______) 4. A. lessons               B. listens                   C. let’s
______) 5. A. work                   B. worker                   C. works
______) 6. A. my friend               B. in the fridge           C. fly a kite
______) 7. A. on the first floor           B. on the second floor       C. on the third floor
______) 8. A. yellow and green       B. yellow and red           C. yellow and blue
______) 9. A. its body               B. his body               C. her body
______) 10. A. like climbing           B. like climb               C. like to climb
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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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