学进去-教育应平等而普惠
试题
类型:情景交际
难度系数:0.64
所属科目:小学英语
情景交际。
(  ) 1.你想知道妈妈买了几个苹果,你应问________
(  ) 2.春游时你不小心丢了书包,你会对妈妈说________
(  ) 3.妈妈从超市回来,你会问妈妈________
(  ) 4.你想告诉妈妈表妹Lucy喜欢香蕉,你应说________
()5.妈妈想让你去买些水果,她会说________
A.What did you buy, Mum?
B.Go and buy some fruit, please.
C.I lost my bag.
D.Lucy likes bananas.
 
E.How many apples did you buy?
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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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