学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.65
所属科目:小学英语
选择正确的单词,将正确答案的序号写在横线上。
A. recycle       B. factory        C. During       D. yourself        E. wood        F. match
1.The black smoke from the _______ makes the air dirty.
2.People bring their _______ bags to the supermarket.
3.Please write back soon and tell me about _______.
4._______ the winter holiday. Peter went to the UK.
5.The girl used the last _______ to make the fire.
6.We use _______ to make paper.
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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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