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. koalas       B. kangaroos             C. pandas
(      ) 2. A. country       B. city             C. clown
(      ) 3. A. library       B. book             C. Internet
(      ) 4. A. learn       B. lover             C. like
(      ) 5. A. Sydney        B. London             C. Oxford
(      ) 6. A. this weekend       B. at the weekend       C. next weekend
(      ) 7. A. Big Ben       B. Tower Bridge             C. the London Eye
(      ) 8. A. read books       B. read magazines       C. read stories
(      ) 9. A. find out       B. look for             C. learn about
(      ) 10. A. slips on the floor        B. sleeps on the bed       C. sweeps the floor
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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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