Your homework habits might be affecting your grades. Are you feeling tired or bored when it comes to homework time? Are you arguing with parents about your grades? You can change the way you feel by taking better care of your mind and your body. Get the sleep you need.
Studies show that teens' natural sleeping habits are different from those of adults. This often causes less sleep among teens, since they tend to have trouble going to sleep at night, and have trouble waking in the mornings. You can avoid some of the problems that come with less sleep by changing some of your nighttime habits.
Improve your memory
A great way to improve your homework habits is to improve your memory with brain exercise. There are many theories and ideas about improving memory, but there is one mnemonic（记忆的） method that has been around since ancient times. Ancient accounts show that early Greek and Roman orators used the “loci” method of remembering long speeches and lists. You may be able to use this method to improve your memory at test time.
Fight the desire to delay
Do you get the sudden desire to feed the dog at homework time? Don't fall for it! Delay is like a little white lie we tell ourselves. We often think we'll feel better about studying later if we do something fun now, like playing with a pet, watching a TV show, or even cleaning our room. It's not true.
Avoid repetitive(重复的) stress
During text messaging, Internet surfing, and computer writing, you are using your hand muscles in all new ways, and you're very easily to be influenced by something dangerous or the repetitive stress injury. Find out how to avoid pain in your hands and neck by changing the way you sit at your computer.
【小题1】What differences between the teens and adults are mentioned in the passage?

As Sam slowly woke, he got a funny feeling in his stomach. He knew he would have to do something that he had been afraid to do for a long time.
The school bus came on time, and he sat with his friend, Billy. They chatted about baseball. It was a great way to get his mind off what he had to do later. As they got close to the school, he could feel his heart beating. His hands were starting to sweat. He hated this!
He entered Mrs. Owen’s class. She was smiling, and saying hello to all her students as she did every morning.
“Hi, Sam!” she said as he walked in.
“Hi,” he said and quickly sat in his seat. Then the class began to take their spelling test. He looked at the clock. The time was near. He hoped he was not first! Mrs. Owens said it was time to begin their special day.
“Sam, you’ll be first.” Mrs. Owens said to the class, “Sam has worked very hard on his report on Hawaii, and I know it is very interesting.”
Sam nervously greeted his class. Then, he thought about the fun things he had read about surfing, volcanoes, and pineapples in Hawaii, and he started to talk. He talked in front of the whole class, and it was fun. The class clapped as he finished and Mrs. Owens was smiling. It wasn’t terrible at all and he knew he would do better the next time.
【小题1】 How did Sam feel after he woke?