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,选择你所听到的内容。
(      ) 1. A. cleaned                           B. closed                           C. cooked
(      ) 2. A. glass                           B. bottle                           C. cup
(      ) 3. A. eat                                 B. ate                           C. ear
(      ) 4. A. slept                           B. washed                    C. cleaned
(      ) 5. A. driver                           B. drove                           C. drive
(      ) 6. A. drink                           B. week                           C. drank
(      ) 7. A. class                           B. like                           C. last
(      ) 8. A. play                           B. cook                           C. eat
(      ) 9. A. run                           B. jump                           C. trumpet
(      ) l0. A. cleaned                    B. clothes                           C. cloudy
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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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