1、Snake meat is popular in restaurants．Some people think eating snakes is good for their health．But these people don't know that mice and bad worms are often in snakes' bodies．And we're sorry to see that some people are killing more snakes．

The English newspaper Shanghai Star says，“People in Shanghai eat about 1,000 tons of snakes every year．In Shenzhen，sometimes people serve 10 tons of snakes on dinner tables in a day．”

If we still do like this，there will be a vicious（惡性的）circle：If people eat more snakes，the snakes will disappear，but the mice will be more，there will be fewer crops．

This will make more people hungry（挨餓）．Who wants to see such a bad thing happen? So let's not eat snakes any more．To protect snakes is to protect ourselves．

任務(wù)（一）：給下列句子填上適當(dāng)?shù)膯卧~。（詞數(shù)不限）

1．Snakes eat lots of __________．

2．People in Shanghai eat __________ snakes than those in Shenzhen．

任務(wù)（二）：回答下列問題。

3．Are snakes good or bad for humans?

4．What will happen if there are no snakes'?

任務(wù)（三）：將文中畫線的句子譯成漢語。

5．

25、Miss Wang is a young teacher of English in a middle school in Chongqing．She loves teaching very much．One day when she was giving an English lesson，she found Mr. Li，the headmaster，sitting at the back of the classroom．After class，Mr. Li told her that he came to her class to find out how much English and Chinese she was using in class．The result was about half English and half Chinese．She was using Chinese when she gave instructions（指示）and explained some grammar lilies to her students．Mr. Li suggested that she should use English as much as she could in class．

So Miss Wang made the following plans：

▲Join an English club and practice speaking English．

▲Learn more English teaching expressions by heart

▲Have a five-minute talk with students ill English before class．

She used body language to make herself understood if students could not follow．One year later，she found she could speak English fluently in class．

1．Miss Wang _________．

A．hates to teach English                               B．is a teacher of Chinese

C．love her job                                               D．is angry with the headmaster

2．Mr. Li came to Miss Wang’s class to _________．

A．practice speaking English

B．make Miss Wang understood

C．give instructions to the students

D．find out how much English and Chinese Miss Wang was using in class

3．After Mr. Li left，Miss Wang realized that she should _________ in her class．

A．use more Chinese                                    B．use more English

C．use half English and half Chinese                 D．use body language

4．The underlined word “fluently” means _________．

A．easily and well        B．completely           C．clearly                   D．recently

5．What's the main idea of this passage?

A．Joining an English club．

B．Talking with the students before class．

C．Speaking more English in English classes．

D．Learning more English teaching expressions．

24、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

23、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

21、--Do you think it's going to rain next week?

-- ________．

A．I don't believe                     B．I don't believe it          

C．I believe not so                   D．I believe not

20、--What do you usually do when you see others ________?

--I usually stop them and ________．

A．litter；pick it up                               B．littering；pick up it

C．litter；pick it                                    D．littering；pick it up