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:0.94
所属科目:小学英语
Cici: What’s the matter, Sarah? 1.
Sarah: No…
Cici: Do you miss your friends in London?
Sarah: No…
Cici: Are you feeling angry?
Sarah: Oh no! 2.I’ m feeling sad.
Cici: 3.
Sarah: My grandma is ill in hospital.
Cici: Oh, 4.
Sarah: 5.She told me that
A.I’m so sorry
B.What’s the matter?
C.Are you feeling bored?
D.Of course not!
E.I called my mum yesterday.
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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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