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,选择你所听到的句子,将序号填在括号里
_____) 1. A. I go to school by bike.   B. I go by plane.   C. I go by train.
_____) 2. A. Red light!   B. Yellow light!  C. Green light!
_____) 3. A. It’s near the post office.    B. It’s next to the hospital.      C. It’s east of the cinema.
_____) 4. A. I’m going to the bookstore.  B. I’m going to the Great Wall.    C. I’m going to the cinema.
_____) 5. A. I’m going to buy a book.  B. I’m going to buy a magazine.   C. I’m going to plant trees.
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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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