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或短语。
(      ) 1. A. every       B. never       C. clever
(      ) 2. A. short       B. sport       C. pour
(      ) 3. A. sound       B. found       C. ground
(      ) 4. A. wait       B. where       C. way
(      ) 5. A. throw       B. through       C. three
(      ) 6. A. present       B. parent       C. parents
(      ) 7. A. sleeps       B. sleepy       C. sleep
(      ) 8. A. finished       B. finishing       C. finish
(      ) 9. A. get up       B. hurry up       C. wake up
(      ) 10. A. wash your face       B. brush your teeth       C. wash your shoes
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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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