学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.94
所属科目:小学英语
将下列基数词与对应的序数词匹配   
1.one________                    A. third
2.two________                    B. first
3.three________                  C. second
4.five________                      D. ninth
5.nine________                    E. twelfth
6.twelve________                 F. fifth
7.thirty________                  G. twenty-sixth
8.twenty-six________          H. thirtieth
9.eight________                  I. eighth
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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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