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,选出你听到的单词或词组。(听两遍)
(     ) 1. A. night              B. right              C. all right
(     ) 2. A. coat              B. boat              C. cold
(     ) 3. A. Maths              B. music              C. matter
(     ) 4. A. Miss              B. Mr              C. Mrs
(     ) 5. A. cold              B. cool              C. book
(     ) 6. A. bag              B. back              C. bad
(     ) 7. A. try              B. tree              C. trousers
(     ) 8. A. like              B. ache              C. make
(     ) 9. A. go swimming       B. go skating       C. go boating
(     ) 10. A. 5: 30              B. 5: 13              C. 5: 33
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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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