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
Feifei: How many seasons are there in a year?
Tom: 1.
Feifei: What do you do in spring?
Tom: 2. It's fun. I like spring.
Feifei: Do you like winter?
Tom: 3. But I like autumn. What about you?
Feifei: I like winter. 4.
Tom: That sounds good.
A.I fly kites with my family.
B.Four.
C.I go skating in winter.
D.Yes, I do.
E.No, I don't.
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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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