学进去-教育应平等而普惠
试题
类型:写出答句
难度系数:0.65
所属科目:小学英语
按要求改写句子。
1.I did my homework last night.(改为否定句)
_____________________________________________________
2.He went to Sanya last summer holiday.(就画线部分提问)       
_____________________________________________________
3.He often cleans the room.(用yesterday 改写句子)   
He________the room________.
4.I went camping last weekend.(改为一般疑问句并作否定回答)   
________you________camping last weekend?
—No, I________.
5.Lily is 45 kilograms. Lucy is 48 kilograms.(合并为一句)   
Lucy is________ ________Lily.
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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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