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,选出你所听到的单词或短语。
(_____) 1. A. between       B. beside           C. behind
(_____) 2. A. too cold       B. too hot       C. too hard
(_____) 3. A. fridge           B. front           C. forest
(_____) 4. A. tails           B. eyes           C. wings
(_____) 5. A. third           B. thirsty           C. three
(_____) 6. A. hard           B. heavy           C. high
(_____) 7. A. bear           B. both           C. body
(_____) 8. A. hobby           B. puppy           C. happy
(_____) 9. A. swing           B. swim           C. sing
(_____) 10. A. look out       B. just right       C. watch films
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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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