How did ancient people tell time?

◆Natural ways of keeping time

In ancient time，people had to use the sun and the moon to tell time．They got up when the sun came up and worked in the fields until the sun went down．

◆Man-made things

The sand clock is made of two glass balls joined by a narrow neck．The top ball was filled with sand．The sand slowly moved through the neck into the bottom（底部）ball．People knew the time by watching how much sand fell to the bottom hall．People also made the water clock．They made a small hole near the bottom of a pot．when the water in the pot dripped（滴）out，marking（刻度）inside the pot showed how much time passed．

◆Body clocks in living things

Animals' body clock

Animals don't need clocks to know time．They have their body clocks．Birds know when to fly to warmer places before winter．Some animals know when to keep more food for the winter．Some fish know when it's time to move up the river and lay eggs．

Plants' own clock

Plants have their own clocks to keep time．Plants know when to open flowers or when to drop their leaves．

Body clock in human beings

People also have their own body clocks．When we get used to our lives，our body clocks can be very exact．It can tell us when it's time to wake up．It can also tell us when to eat or to go to sleep．

1．How could an ancient farmer know when to go back home from the field in the daytime?

A．By looking at the moon．                         B．By the sand clock or the water clock．

C．By looking at the sun．                               D．By feeling whether tired or not．

2．According to the passage，how can animals know time?

A．They use body clocks．                           B．They ask other animals．

C．They use the sun and the moon．                D．They make something to tell time．

3．How many kinds of living things with body clocks are mentioned here?

A．Two．                B．Three．               C．Four．                   D．Six．

4．In what way is the sand clock the same as the water clock in telling time?

A．Both of them have a neck．

B．Both of them have two glass balls．

C．Both of them can be used only once．

D．Both of them give the time by quantity（數(shù)量）．

5．The passage is mainly about _________．

A．man-made clocks                                    B．nature's clocks

C．time and clock                                           D．how people keep time

Each year there are an increasing number of cars on roads，as millions of new cars are produced．One out of every six Americans works at putting together the parts of cars，driving trucks，building roads or filling cars with gas．Americans couldn't live without cars!

Most Americans find it hard to think what life would be without a car．However，some have realized the serious problem caused by cars．The polluted air is harmful and dangerous to health．

One way to get rid of the polluted air is to design a new car．That is what several large car factories are trying to do．But to build the new car is easier said than done．Progress in this field has been slow．

Another way is to replace the car engine with something else．Engineers are working on some new cars．Many makers believe that it will take years to develop a practical model that pleases people．

To prevent the world from being polluted by cars，we'll have to make some changes．Americans，for example，have to cut down the number of their cars．They are encouraged  to travel and go to work by bike．Riding a bike is thought to help keep the air clean．

But this change does not come easily．A large number of workers may find themselves with no jobs if a car factory closes down．And the problem of air would become less important than that of unemployment．

Although ears have brought us a better life，they have also brought us new problems．

1．Some large car factories in the U．S．A are trying to make a new kind of car which _______．

A．is clean in itself                                 B．is used to clean streets

C．is easier to make                                       D．does not pollute the air

2．If the number of cars is cut down，the most serious problem to American workers is to _____．

A．lose their jobs                                          B．pollute their environment

C．go to work on foot                                  D．make their factories richer

3．The writer wants to tell us that _________．

A．riding a bike is the only way out

B．the number of caps must be cut down

C．people wouldn't live without cars

D．cars bring us not only a better life，but also serious problems

4．Which fact does the passage provide?

A．About one sixth of American workers are working in car factories．

B．The hest way to get rid of air pollution is to change the car engine for something else．

C．It isn't easy to change the way of life in the U．S．A．

D．In the U．S．A，bikes will surely take the place of cars in the future．

5．Which is the best title for the passage?

A．A New way to Get Rid of Polluted Air             B．Cars and Polluted Air

C．Many Serious Problems in the U．S．A         D．Changes in Car Production

用方框中所給單詞的適當(dāng)形式填空，有兩詞是多余的。

Do you need some suggestions on learning English．We have some great ones for you this time and we’re sure they’ll help you to learn English more __1__ and with more fun!

◆Become interested

Find something __2__ about your English study．Why not __3__ your favorite English films? You can also read the lyrics（歌詞）of pop songs，or check out celebrity sites（名人網(wǎng)站）to learn more about your favorite basketball or football __4__．

◆Don't study for too long

Studying 15 minutes each day is much __5__ than studying 2 hours once a week．Studying __6__ much more time if you don't feel tires．

◆Learn through reading

Read English texts as __7__ as you can．They could be news，short stories or __8__．Choose an interesting text that isn't too difficult for you．

◆Learn through movies and songs

Choose your favorite movie．Have paper and pen ready __9__ you may want to write down some useful words or phrases．Listening to your favorite English songs is __10__ cool wav．Read first，and then find out what the song is about．Pick some words or phrases that you'd like to learn．A dictionary may also be useful．

He joins many clubs．He plays ________ violin and ________ volleyball every day．

A．the；／               B．the；the              C．／；the                 D．／；／

--Can I help you?

-- ________．I want a sweater．

A．You can          B．Yes，please          C．I don't know           D．No，you don't

--Do you have a baseball game?

--Yes．We have it ________．

A．in June 10th          B．on October 11th         C．on May            D．on School Day

--I like documentaries ________ I like comedies．

--I like comedies ________ I don't like documentaries．

A．and：and             B．and；but          C．but；and            D．but；but