学进去-教育应平等而普惠
试题
类型:单词拼写
难度系数:0.65
所属科目:小学英语
Fill in the blanks according to the first letter given to complete the following sentences (根据所给首字母填入适当的单词)
1.The fireman was seriously i________in a big fire.   
2.As we all know, we can get h________from the sun.   
3.It's important for us to learn to c________fire.   
4.What may happen if people are not c________with fire?   
5.A cigarette end may c________hill fire.   
6.Could you find something i________about fire and write a report?   
7.Today, people use fire in many d________ways.   
8.Fire can be very d________.
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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

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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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