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,将其序号填入题前括号内。
(       ) 1. A. ear       B. easy       C. every
(       ) 2. A. tired       B. tiger       C. time
(       ) 3. A. hill       B. ill       C. hear
(       ) 4. A. hot       B. hear       C. hurt
(       ) 5. A. coats       B. shorts       C. shirts
(       ) 6. A. nice       B. nine       C. night
(       ) 7. A. speak       B. spring       C. subject
(       ) 8. A. go skating       B. go boating       C. go climbing
(       ) 9. A. in the morning       B. in the afternoon       C. in the evening
(       ) 10. A. Are you cold?       B. Are you all right?       C. Are you happy?
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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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