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
Listen and choose. 听录音,选出你听到的单词。
(      ) 1. A. fan              B. find              C. fork
(      ) 2. A. but              B. bed              C. beef
(      ) 3. A. table        B. try             C. toy
(      ) 4. A. little        B. light              C. lost
(      ) 5. A. driver        B. door              C. dinner
(      ) 6. A. name        B. race              C. game
(      ) 7. A. people        B. pass              C. puppy
(      ) 8. A. hot              B. hope              C. home
(      ) 9. A. pull              B. bill              C. doll
(      ) 10. A. that        B. them              C. taxi
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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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