学进去-教育应平等而普惠
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类型:阅读选择
难度系数:0.85
所属科目:高中英语

Taking proper care of our brain, in addition to ensuring its proper functioning, will help us keep our memory in shape and even prevent some diseases such as Alzheimer’s. Here are some foods that are good for us.


Green vegetables

Green vegetables contain vitamin A, B vitamins and antioxidants (抗氧剂) that help the proper function of the brain and maintain physical health. Vegetables, in general, should be present in at least two servings a day. To take advantage of the nutrients contained in green vegetables, it is recommended to consume them steamed or even raw. If you choose to eat raw vegetables, you need to use appropriate methods to remove harmful things from their surfaces.


Fish

Fish is a source of phosphorus (磷), essential part of the development of nerve cells. For this reason, its consumption is important to guarantee the adequate contribution. We also highlight omega-3 fatty acids in oily fish, which have a protective role against the progression of cognitive decline.


Nuts

In addition to being a great source of omega-3 fatty acids, which we have already talked about, nuts provide phosphorus, vitamin E and B vitamins so that they maintain a correct blood supply in our brain.


Fruit

Within this group we highlight red fruits, especially cherries and apples. Red fruits are a source of vitamin C, minerals and antioxidants that are good companions to maintain a healthy memory.

Though these foods are good, consuming too much of them may be harmful to us.

1.As for green vegetables, the author advises us to eat _________ daily.
A.at least one servingB.three servings
C.no more than two servingsD.no less than two servings
2.What do the four kinds of foods have in common?
A.They are good for our brains.B.They contain the same nutrients.
C.They are beneficial to the black hair.D.They are sources of omega-3 fatty acids.
3.Where can the text most probably be found?
A.In a history book.B.In a biography.
C.In a health magazine.D.In a novel.
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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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