How do you remember the way to your house? Where do dreams come from?     . A British scientist showed that “sleep can improve one’s memory.” It’s not a dream for students to study when they sleep. In fact, your brain is working day and night. If you learn words before bed, a certain part of the brain may help you to remember the words while you sleep.   It might make a person more talented.
There was more interesting things about the brain.    Just two bananas can give the brain enough energy to work for a whole day. According to some scientists, yawning(打哈欠) keeps our brains “cool”, which makes us think quicker.

①Eat healthy foods.
②Get a lot of playtime or exercise.
③Don’t drink or smoke.
④Use your brain a lot.

A. Your brain uses less energy than a fridge light’ B. What’s more, another scientist in the USA found that there was a “talent button” in the human brain. C. Here are some pieces of advice to keep a good brain. D. It’s your brain that does these things.