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
Ken: Yesterday was the School Sports Day. 1.
Ann: I ran in the 100-meter race.
Ken: 2.
Ann: Yes, I did. I was second.
Ken: 3.
Ann: Thanks.
Ken: 4.
Ann: Jane was first.
Ann: 5.
Ken: Yes, I ran in the 200-meter race.
A.Who was first?
B.What did you do yesterday?
C.Did you run on the School Sports Day?
D.Congratulations.
E.Did you do well?
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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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