学进去-教育应平等而普惠
试题
类型:连线题
难度系数:0.65
所属科目:小学英语
对话连线
1. How often do you eat vegetables?                     a. I eat fruit three times a week.
2. How often do you eat fruit?                               b. I eat donuts twice a day. After lunch and dinner.
3. How often do you eat donuts?                          c. I don’t like vegetables. I eat potatoes and tomatoes about twice a week.
4. You need to eat more vegetables and fruit.        d. Yes, An apple a day keeps doctor away!
5. Vegetables and fruit is good for you.                 e. Thank you ! I will eat them.
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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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