学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.65
所属科目:小学英语
句子配对。
A.Half a kilo. B.I bought twelve. C.They’re over there.  D.Yes, I ate it all.   E.I bought lots of chocolate.             
1.Where are the apples?    (______
2.How many eggs did you buy?        (______
3.How much cheese did you buy?  (______
4.What did you buy?        (______
5.Did you eat all the chocolate?   (______
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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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