学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.65
所属科目:小学英语
听录音,选择正确的答语。
_____) 1. A. I'm 12 years old.       B. I'm 1.60 metres.       C. I'm 50 kilograms.
_____) 2. A. I'm going to go camping.  B. I cleaned my room yesterday.  C. I wash my clothes every day.
_____) 3. A. Yes, she did.         B. Yes, she does.       C. Yes, she is.
_____) 4. A. He went to Hubei.     B. He went there by plane.  C. He went camping with his friends.
_____) 5. A. Yes, it was.             B. There was no gym.       C. It was good.
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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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