学进去-教育应平等而普惠
试题
类型:其他
难度系数:0.65
所属科目:小学英语
阅读句子,在方框中选出与句子意思相同的词。
A. stairs        B. stranger            C. candy             D. money        E. crossing

1.This is someone that we do not know. (     )
2.We can buy things with it. (     )
3.It’s the sweet food. Children love it. (     )
4.If you want to go to other floors in a building, you can use them. (     )
5.You should go this way if you want to go to the other side of the road. (     )
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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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