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
听问句,选答句。读两遍。   
(      ) 1. A. It’s near the window.                            B. Many desks and chairs.
(      ) 2. A. It’s white and black.                            B. It’s in your schoolbag.
(      ) 3. A. It’s blue.                                                B. I have three books.
(      ) 4. A. His name is Zhang Peng.                     B. My friend is friendly.
(      ) 5. A. Yes, it is.                                                B. Yes, they are.
(      ) 6. A. Yes, I am.                                         B. Yes, it is.
(      ) 7. A. I’d like some beef noodles.                     B. No, thanks.
(      ) 8. A. Yes, please.                                         B. Here you are.
(      ) 9. A. He’s a doctor.                                         B. She’s a nurse.
(      ) 10. A. There are six.                                   B. My family has six people.
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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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