学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.64
所属科目:小学英语
按要求改写句子。
(1)I was at the cinema yesterday.  (改为否定句)
       at the cinema yesterday.
(2)I went to school by bus last week. (改为一般疑问句)
      you      to school by bus last week?
(3)My holiday was exciting. (就划线部分提问)
     was      holiday?
(4)They will go to Hangzhou by plane. (改为一般疑问句)
     they      to Hangzhou by plane?
(5)We should save water.(同义句)
We shouldn’t        water.
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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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