学进去-教育应平等而普惠
试题
类型:选内容补全对话
难度系数:0.65
所属科目:小学英语
阅读下面的对话,根据上下文选择句子,将对话补充完整,并将该选项前面的字母编号写在相应的横线上.
A.OK, I’ll take them.
B.How much are they?
C.What about the black boots?
D.I want a pair of boots.
E.Can I help you?
A:Welcome to our shop._________________________________?
B:Yes, please.________________________________________.
A:What size do you wear?
B:Size 36.
A:_________________________________________?
B:I don’t like black. I like the white boots._______________________?
A:99yuan.
B:________________________________________________________.
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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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