After a busy day of work and play, the body needs to rest. Sleep is necessary fo

After a busy day of work and play, the body needs torest. Sleep is necessary for good health. During this time, the body recoversfrom the activities of the day. The rest that you get while sleeping makes itpossible for your body to prepare itself for the next day.

There are four levels of sleep, each being a littledeeper than the one before. As you sleep, your body relaxes (放松) little by little. Your heart beats more slowly, andyour brain slows down. After you reach the fourth level, your body shifts (变换) back and forth from one level of sleep to the other.

Though your mind slows down, you will dream from timeto time. Scientists who study sleep point out that when dreaming occurs, youreyeballs begin to move more quickly (although your eyelids are closed). Thisstage of sleep is called REM, which stands for rapid eye movement.

If you have trouble falling asleep, some peoplerecommend (建议) breathing very slowly and very deeply.Other people believe that drinking warm milk will make you drowsy. Thereis also an old suggestion that counting sheep will put you to sleep.

1.The text suggests that not getting enough sleepmight make you _____.

A．suffer frompoor health                  B．feel tiredand nervous

C．dream moreoften                       D．breathequickly

2.During REM, _____.

A．you moverestlessly

B．you startdreaming

C．your mindstops working

D．your eyeballsmove quickly

3.The underlined word "drowsy" in the lastparagraph probably means _____.

A．lazy              B．sleepy            C．relaxed           D．pleased

4.A good title for this text might be _____.

A．Dreams                               B．Sleep

C．Good Health                           D．Work and Rest

试题答案

【答案】

1.A

2.D

3.B

4.B

【解析】

试题