学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.65
所属科目:小学英语
A. Good morning.
B. Yes, I’m fine. Thank you.
C. I’m XiaoHui.
D. Bye!
E. Good evening.
F. Good afternoon.
G. Hi!
H. Nose.
I. That’s OK.
J. All right. Let’s go.
1.Good evening. (     )
2.What’s your name? (     )
3.Good afternoon. (     )
4.Touch your nose. (     )
5.Goodbye! (     )
6.Hello! (     )
7.Good morning. (     )
8.Let’s go to school. (     )
9.Sorry! (     )
10.Are you OK? (     )
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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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