学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
听录音,根据所听句子,选择正确的答句。
(     ) 1. A. I’m a teacher.                                 B. He’s a teacher.                           C. She’s a teacher.
(     ) 2. A. She likes writing.                           B. I like writing.                           C. He likes writing.
(     ) 3. A. I’m a driver.                                 B. He’s a driver.                           C. She’s a driver.
(     ) 4. A. Yes, she does.                                 B. Yes, he does.                           C. No, she doesn’t.
(     ) 5. A. Yes, he is.                                 B. Yes, she is.                                 C. No, he doesn’t.
(     ) 6. A. She makes sweets.                           B. He’s a factory worker.             C. He makes sweets.
(     ) 7. A. He’s a policeman.                           B. He’s cool.                                 C. He has a lot of students.
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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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