学进去-教育应平等而普惠
试题
类型:阅读回答问题
难度系数:0.65
所属科目:小学英语
阅读下面的表格,并用英语数字回答问题。
Class 3
Class 4
39 children
43 children
21 boys
21 boys
18 girls
22 girls
20 computers
30 computers
 
 
1.How many children are there in Class 3?
______________________________________
2.How many boys are there in Class 3?
______________________________________
3.How many girls are there in Class 4?
______________________________________
4.How many girls are there in Class 3?
______________________________________
5.How many computers are there in Class 4?
______________________________________
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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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