学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.65
所属科目:小学英语
从B栏中选出A栏句子的正确答语。
A                                                                B 
(_______) 1. What do you do at home?                          

A. It’s 7 o’clock.  
(_______) 2. Whose cap is too big?

B. Yes, she is. 
(_______) 3. Is she helpful?

C. Lily’s cap.  
(_______) 4. Thank you.

D. I clean the windows.
(_______) 5. What time is it?
E. You’re welcome.
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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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