学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.85
所属科目:小学英语
听录音,选择你所听到的句子。(听两遍)
(     ) 1. A. He's a worker in a factory.          B. She's a taxi driver.                      C. Here's my mother.
(     ) 2. A. I'll take you to the park.             B. I'll take you there at 7: 30.          C. I'll take you to school.
(     ) 3. A. What does he do?                      B. Hello, children.                       C. That's very, very late.
(     ) 4. A. She's a nurse.                           B. That's late.                              C. That's early.
(     ) 5. A. My mother goes to work at eleven o'clock every night.     B. My father goes to work at eight o'clock every morning.     C. My father goes to work at six o'clock every evening.
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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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