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
Mrs Black: Hello, may I speak to Mr Green?
Mr Green: Mr Green speaking.
Mrs Black: Hi, Mr Green. 1.
Mr Green: Hello, Mrs Black. 2.
Mrs Black: Tony is ill today. He cannot go to school.
Mr Green: Why? 3.
Mrs Black: He is not so good today. He has a bad cough.
Mr Green: 4. Take good care of Tony, please.
Mrs Black: Thank you. I will.
A.What's wrong with him?
B.This is Tony's mother Mrs Black.
C.I’m sorry to hear that
D.Is there anything wrong with him?
E.Why is Tony not here at school?
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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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