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:0.65
所属科目:小学英语
听音选择,使下列话语完整。
(     ) 1. It’s ______ cool.
A. geting                       B. getting                         C. to get
(     ) 2. My birthday is in ______.
A. February                 B. february                    C. October
(     ) 3. Why do you like ______.
A. they                       B. them                         C. Them
(     ) 4. There are not ______ flowers in front of the house.
A. some                       B. any                                C. an
(     ) 5. There are ______.
A two baby squirrel                  B two baby squirrels             C two babies squirrels
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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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