学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.64
所属科目:小学英语
为下列句子选择最佳答语。
(    )1.What’s his job?
(    )2.What’s her job?
(    )3.Is this John’s mother?
(    )4.How many people are there in your family?
(    )5.Who’s this man?
A.There are six
B.Yes, it is.
C.He’s my grandfather.
D.He is a driver.
 
E.She is a teacher.
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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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