学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.94
所属科目:小学英语
用适当的介词完成句子
1. I have been ________ Zhongshan Park. Have you ever been there? (填介词)   
2. This is a photo ________ my family. There are five people ________ it. (填介词)   
3. We can skate happily ________ winter. (填介词)   
4. —What do you usually do ________ weekends? (填介词)—I usually go out ________ a picnic.   
5. I sometimes go to swim ________ Saturday afternoon. (填介词)
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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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