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:0.65
所属科目:小学英语
听录音,选出听到的内容,听两遍。
(       ) 1. A. lake              B. late              C. let
(       ) 2. A. lives              B. leaves        C. leave
(       ) 3. A. name              B. game              C. plane
(       ) 4. A. next              B. leg              C. neck
(       ) 5. A. spots              B. short              C. soup
(       ) 6. A. their              B. they              C. there
(       ) 7. A. July              B. June              C. Jane
(       ) 8. A. parent              B. present        C. prince
(       ) 9. A. places              B. please        C. play
(       ) 10. A. white        B. write              C. winter
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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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