学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.40
所属科目:小学英语
给下列问句选择恰当的答语。
(  ) 1. Is he your brother?
(  ) 2. Who’s that boy?
(  ) 3. Is she your grandma?
(  ) 4. Who’s that man?
(  ) 5. Who’s that girl?
A.Yes, she is.       
B.No, he isn’t. He’s my father.      
C.He’s my father.
D.She’s my sister.
 
E.He’s my brother.
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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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