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,选出与录音相符的选项,将其字母标号填入题前括号内。每小题读两遍。
(     ) 1. A. is            B. us             C. bus
(     ) 2. A. busy     B. before          C. beside
(     ) 3. A. holiday     B. Saturday     C. yesterday
(     ) 4. A. way       B. wash             C. wall
(     ) 5. A. sleep     B. sheep            C. short
(     ) 6. A. clever     B. closet            C. clothes
(     ) 7. A. after       B. father          C. computer
(     ) 8. A. far       B. car               C. park
(     ) 9. A. piano     B. place            C. picnic
(     ) 10. A. next week   B. last week     C. last night
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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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