The average kid has a busy day. There’s school, taking care of your pets, running around with friends, going to sports for practice or other activities , and doing your homework. It’s tiring just writing them all down. By the end of the day, your body needs a break. Sleep allows your body to rest for the next day.

Everything that’s alive needs sleep to survive. Even your dog or cat curls up for naps. Animals sleep for the same reason as you do to give the body a tiny vacation.

Not only is sleep necessary for your body, it’s important for your brain, too. Though no one is exactly sure what work the brain does when you’re asleep, some scientists think that the brain sorts through and stores information, replaces chemicals, and solves problems while you snooze.

Most kids between 5 and12 get about 9.5 hours a night, but experts agree that most need 10 or 11 hours each night. Sleep is an individual thing and some kids need more than others.

When your body doesn’t have enough hours to rest, you may feel tired or cranky; or you may be unable to think clearly. You might have a hard time following directions, or you might have an argument with a friend over something really stupid . A school assignment that’s normally easy may feel impossible, or your may feel clumsy playing your favorite sport or instrument.

One more reason to get enough sleep: If you don’t you may not grow as well. That’s right, researchers believe too little sleep affect growth and you immune system-which keeps you from getting sick.

59. The underlined sentence means_____.

A. the author is too tired to write any more

B. the author doesn’t want the kids to do anything at school

C. the author is angry with what the kids do at school

D. the author thinks the kids are busy all day at school

60. The author’s purpose of writing this passage is to tell us_______.

A. why everyone needs to have enough sleep

B. animals need to sleep every like us

C. most kids need to sleep at least nine hours a day

D. kids are busy doing a lot of things every day

61. If you don’t have enough sleep you may__________.

A. finish your work ahead of time   B. not get on well with your work

C. work out a problem easily          D. not find your way back home

62. Which of the following is NOT true according to the passage?

A. You need a sleep to let your body rest every day.

B. Feeling tired means that you need to have a rest.

C. Kids who need more sleep than others must be ill.

D. If you want to grow normally you should have enough sleep.