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He looks like her brother, but he is ________.

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Sleep

Babies sleep about eighteen hours a day．Mrs. Thatcher and Napoleon both said they only needed to do it three or four hours a night．Sleep．No one can live without it．But how much do we really need?

Research（研究）by the National Sleep Foundation in Washington says that we all need eight hours' sleep every night．Scientists have found that people who sleep for less than six and a half hours a night are more often ill than people who sleep for eight hours．Going without sleep also increases（增加）the chance of serious illness．Workaholics（工作狂）who sleep for less than five hours often die young，and do less well at work．

The scientists found that adults（成年人）usually sleep for seven hours a night，with 32% sleeping less than six hours．

It also says that the idea that we need less sleep as we get older is completely untrue．“People have no idea how important sleep is to their lives，” Dr Thomas Roth，director of the Foundation says．“Good health needs good sleep．”

“But not too much of it，”says Professor Jim Horne of Loughborough University．“Sleep is like food and drink，”he believes，“you would always like to have a little bit more，but that doesn’t mean you need it．” Professor Home studied a group of people who could spend as many hours as they wanted in bed，after ten hours they didn't find it any easier to get up in the morning．And people who sleep for more than nine hours a night die younger than people who usually sleep for seven or eight!

根據短文內容，選擇正確答案。

1．How many hours a day do babies sleep?        ．

A．8 hours                B．3 hours                   C．4 hours                  D．18 hours

2．It's                   for your health to work without sleep．

A．good                   B．healthy                    C．bad                        D．useful

3．The word “it” means                in the sentence “But not too much of it”．

A．idea                     B．sleep                       C．work                     D．study

4．Professor Horne found it was not             for people to get up in the morning after ten hours' sleep．

A．easier                  B．happier                   C．more important       D．more difficult

5．The passage（文章）is about                 ．

A．spots                   B．food                       C．sleep                      D．drink

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　　In the past, most American mothers were at home to take care of their children during the day. 1 now, many mothers are working. More than half of the American women 2 young children have 3 outside the house.

　　American families settle the child 4 problem in different ways. Some parents let 5 children stay at home alone after school. But they 6 be sure the children are not younger than 10 years old. Other parents say they would 7 let their children be at home alone. They usually pay someone to take care of the 8 . Some parents in the U. S. find their own way to spend less on child care. They join child care groups. It often costs 9 or no money. But many American parents are still trying to 10 good child care at a right price.

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Peter and Alice are in the same school， 1  they are in different  2  ．They go to school on weekdays． 3  school，they often play games with  4  friends．Peter is  5  than Alice．

Peter is a  6  runner(賽跑的人)．But Alice runs faster．They  7  like playing basketball. They work hard at their lessons．Peter studies  8  than Alice．His English is good，  9  . They love their  10  ，because it is very beautiful．The teachers there are friendly．

1．A．and                B．so                C．or                   D．but

2．A．classes                  B．class             C．lesson           D．lessons

3．A．Of                 B．On               C．At                 D．Over

4．A．his                 B．her               C．other           D．their

5．A．young           B．younger          C．more younger D．much young

6．A．taller              B．better           C．well               D．good

7．A．arc                 B．very             C．both                D．much

8．A．hard               B．harder           C．very hard       D．more harder

9．A．too                 B．either           C．and                 D．also

10．A．home           B．family           C．school            D．friends