[填空题]In order to keep our brain healthy ,we should hold ______.

[填空题]In order to keep our brain healthy ,we should hold ______.

[单项选择]How long can a brain keep alive without enough blood

[简答题]In order to keep good friends together, we must, first of all, show respect to each other; there must not be any, however little, reluctance, interference or dominance involved. Should interest or temperament match, people tend to agree or become friends, or they part company and cease to be friends. You shall never go too far, disregarding manners, no matter what kind of close or intimate friends you are. Otherwise, that state of harmony and balance is sure to be upset and you are no longer friends. Generally, every one of us, as friends, still hopes to have a private room reserved for ourselves. By always having your own ways, you may risk intruding into that forbidden zone, causing conflict or estrangement. Though failing to show respect to friends only seems to be a trifle, it may turn out destructive in the future as if pre-destined. So the best solution for keeping good friends together is stick to showing manners as you see fit in everyday dealings and never meddle: always show

[填空题]

What should we do to stay healthy One important rule is (11) to exercise often.
The Fisher family try to exercise every day. Mr. Fisher cannot exercise in the morning because he must be (12) at his job at exactly seven o’clock. But he (13) runs every evening. He would rather run than watch TV. Walter exercises a lot too. He walks to school every day, and after school he plays (14) different sports with his friends. Mrs. Fisher goes to a yoga class (15) twice a week.
The Fishers all feel better now. And they believe you mustn’t be lazy. You don’t have to exercise every day. But you should try to get in shape and stay in shape.

What should we do to stay healthy
One important rule is（　）.

[填空题]Dear Brain Store Customer,
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Name of the bookstore: (1)
Delivery period: within two (2)