学进去-教育应平等而普惠
试题
类型:填内容补全对话
难度系数:0.65
所属科目:小学英语
根据首字母填空,注意使用词的适当形式,每空一词。

There is a park near our school. We can see some trees and f1. there. They are beautiful. We can see a hill b2. the park. At the foot of the hill we can see a r3.. There are some boats on it. It is Sunday today. There are many c4. in the park. Some are dancing. Some are playing. Who’s under the tree? Oh! They’re Lily and Lucy. They like reading books. They often go to the park and r5. books.

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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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