学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.64
所属科目:小学英语
读一读,然后给相应的物品标上价格。(10%)
(1)How much is the desk ?              
It’s sixty-six yuan. 
 
                    
(2)How much is the bike ?
It’s a hundred yuan.          

                         
(3)How much is the doll ?                 
It’s forty-yuan.

    
(4)How much is the rooster ?
It’s eight-three yuan.

     
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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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