学进去-教育应平等而普惠
试题
类型:改错
难度系数:0.65
所属科目:小学英语
(题文)找出下列句子唯一的错误之处并在横线上改正。
(1) I has a small nose and two big eyes.                   _________
(2) Look at the giraffe. It has so tall.                      _________
(3) This a elephant.                                    _________
(4) It have two small eyes and a long tail.                  _________
(5) Look the pig. It's big.                               _________
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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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