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,选出你所听到的内容。
(      ) 1. A. wall       B. well             C. will
(      ) 2. A. exciting       B. excited             C. excitedly
(      ) 3. A. country        B. city              C. Canada
(      ) 4. A. love       B. sport-lovers             C. lovely
(      ) 5. A. kangaroos       B. koalas             C. sleep
(      ) 6. A. read newspapers       B. read magazines       C. read books
(      ) 7. A. next week       B. last week             C. this week
(      ) 8. A. find out       B. go out             C. look out
(      ) 9. A. look after       B. look for             C. look at
(      ) 10. A. Big Ben       B. the London Eye       C. Tower Bridge
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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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