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。(听两遍)
(      ) 1. A. talk       B. take              C. walk
(      ) 2. A. Tuesday       B. Saturday             C. holiday
(      ) 3. A. sounds       B. finds             C. ground
(      ) 4. A. say       B. stay             C. study
(      ) 5. A. play       B. plane             C. plan
(      ) 6. A. my aunt       B. my uncle             C. under the desk
(      ) 7. A. play games       B. your plan             C. your photo
(      ) 8. A. black and white       B. go back             C. last week
(      ) 9. A. summer holiday       B. winter holiday             C. in the holiday
(      ) 10. A. how long       B. how old             C. how many
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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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