学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
看图,根据图意选句子,将序号填在相应的位置。
(1)

A.OK !
B.Thank you ! 
C.Here you are.
(2)

A. Sure. Here you are!
B.Thank you!
C. No, thanks.                    
(3)

A.Bye-bye.
B.You are welcome.              
C.OK!                     
(4)

A.This is Mike!
B.Good afternoon.
C.Good morning.
(5)

A. I have a ruler.
B. Really? I like it.
C. Guess!
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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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