学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.85
所属科目:小学英语
听录音,选出正确的答语。听两遍。
______) 1. A. Yes, there was.   B. Yes, there is.    C. No, there aren’t.
______) 2. A. I liked the stars.  B. I looked it up on the Internet.  C. Tell us about it.
______) 3. A. I can ride my bike.     B. Mike couldn’t play it.  C. Mike’s old photos.
______) 4. A. One day I’m going to visit the moon.
B. There was one small building.
C. There’s a new one in our school.
______) 5. A. Yes, I do.           B. Yes, I did.           C. Yes, he does.
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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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