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. tree                   B. three                   C. there
______) 2. A. swings               B. wings                   C. songs
______) 3. A. hole                   B. cold                   C. home
______) 4. A. soup                   B. cool                   C. some
______) 5. A. angry                   B. hungry               C. afraid
______) 6. A. go climbing           B. watch films               C. go skating
______) 7. A. a long tail               B. a big mouth               C. a big body
______) 8. A. too cold               B. so soft                   C. very hard
______) 9. A. play football           B. play basketball           C. play table tennis
______) 10. A. yellow shoes           B. a yellow hat           C. a yellow dress
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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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