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:0.85
所属科目:小学英语
Sarah: Is your father here today?
Oliver: 1.
Sarah: What does he do?
Oliver: 2.. He often goes to other countries.
Sarah: 3.
Oliver: She is a head teacher.
Sarah: 4.
Oliver: Yeah. She’ll be here today!
Sarah: Do you want to be a head teacher, too?
Oliver: 5.
A.He’s a businessman.
B.That’s nice.
C.No. He’s in Australia.
D.No, I want to be a businessman.
E.What does your mother do?
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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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