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
补全对话。
Lily: My bag is so heavy!
Jack: 1.
Lily: Two notebooks and ten storybooks.
Jack: 2.
Lily: Yes. They’re my friend’s storybooks.
Jack: Who’s your friend? 3.
Lily: A boy.
Jack: 4.
Lily: His name is Tim.
Jack: 5.
Lily: Yes. He’s tall and thin.
Jack: 6.
Lily: Thanks.
A.What’s in it?
B.Let me help you.
C.Ten storybooks?
D.What’s his name?
E.Is he tall?
F.A boy or girl?
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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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