学进去-教育应平等而普惠
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类型:填内容补全对话
难度系数:0.65
所属科目:小学英语

Everybody w1. to be healthy. You know food is very important. You should have some m2. and fish every day, because they give you e3.. Of course, you can have more fruit and v4.. Because they have a lot of vitamins, they are good for you. There is a saying, “An apple a day k5. the doctor away.” But remember don’t eat too much chocolate. It’s too s6.. And it’s bad for your t7..

S8. can also keep you h9.. For example, r10., swimming or playing b11., they can make you s12..

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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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