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,选出你所听到的内容。(听两遍)
______) 1. A. beside                       B. body                   C. both
______) 2. A. arm                       B. also                   C. about
______) 3. A. there                       B. then                   C. their
______) 4. A. study                       B. story                   C. swing
______) 5. A. first                       B. find                   C. finger
______) 6. A. again                       B. play                   C. kite
______) 7. A. read stories                   B. reading stories           C. read books
______) 8. A. a big body                   B. big ears               C. big eyes
______) 9. A. We all like climbing.           B. We all like it.           C. We all like to eat.
______) 10. A. There’s a hole in the ice.     B. We skate on the ice.       C. We all like skating.
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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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