We can see walls everywhere in the world. But the Great Wall of China is  (1)   of all. It is often  (2)   “the Ten-thousand-li Great Wall”. It is about 6,300 kilometres  (3)   and it is 4~5metreswide. In most places, five or ten men can walk   (4)  . When you visit the Great Wall, you can’t help wondering.  (5)   Chinese people were able to build such a great wall   (6)   any modern machines many centuries ago. Theyhad todo all then work by hand. It  (7)   millions of men hundreds of years to build it.TheGreat Wallhasa history of over two thousand years. The men began to build the  (8)   part of it about2,700 yearsago. Then Qin Shi Huang made the men  (9)   join all the walls together. He thought that couldstopthe invaders(侵略者)from coming into the country .Today the Great Wallhas becomea place of interestto all the people inthe world. Every year  (10)  people come to visit it from all over the world.There is a famous saying, “ He who doesn’t reach the Great Wall is not a true man.”

As we all know, the environment around us is getting worse and worse. In some places we can’t see fish  (1)  in the river or trees on the hills. Some people even have no clean water to drink.

      Recently, a new life style called low carbon（低碳）life is spreading every corner of our country. The meanings of low carbon are 

  (2)  energy and no waste. It is such an important project that I can’t wait to express my ideas on how to promote it.

Firstly, we should    (3)  a no-car day every week in our school. Because cars not only cause serious air pollution but also waste energy.

  (4)  the no-car day, neither students  (5)  teachers are allowed to drive to school. At the same time, just walk or run. Use our legs and enjoy the fun.

       Secondly, we had better not use plastic bags  (6)  . No one can stand the“white pollution”，  (7)   it is wise to use cloth bags which can be used again and again.    (8)  ，one thing that we should keep in mind is that every big thing comes from the smalldetails. So, as students, we ought to turn   (9)   the lights the moment we leave, use  (10)   sides of the paper, and reuse our textbooks and so on.

        All in all, it weighs greatly for all of us to put the low carbon lifestyle into practice. Just set our mind to these：no-car days, no plastic bags, and no waste. Let’s do it now.

Many kids want to help keep the environment clean but don’t know where to start.

  (1)  , even the simplest everyday activities can make a real difference to the environment. Here is how:

◆Don’t litter. Litter can   (2)   our water and that could do harm to us and to wildlife.

◆Recycle bottles, paper and plastic. This is a good   (3)   to develop and can really make a difference.

◆  (4)   turn off lights and electronic devices (设备) when they are not being used.

◆Use your   (5)   or walk to nearby locations rather than riding in a car. Encourage your friends and family to   (6)   the same.

◆Don’t throw your old clothes or toys away. Give   (7)   to a local charity (慈善组织) or a friend that may need them.

◆  (8)   wasting plastic bags by bringing your own reusable cloth bags to stores.

◆If you see litter,   (9)  .

◆By following these tips and using them in your everyday life, you will make the world a   (10)   place. It’s never too late to start, and what better time is there than right now?

    Waste can be seen everywhere in the school. Some students ____  (1)  ____ more food than they can eat and others often forget to turn off the lights when they ____  (2)  ____ the classroom. They say they can afford these things. But I don't agree with them.

     Waste can bring a lot of ____  (3)  ____. Although China is ____  (4)  ____ in some resources(资源), we are short of (缺乏) others, for example, fresh water (淡水), It is reported that we will have no

coal(煤) or oil to use in 100 years. So ____  (5)  ____ we go on wasting our resources, what can we use in the future and where can we move? Think about it. I think we should say no to the students ____  (6)  ____

waste things every day. Everybody should stop ____  (7)  ____ as soon as possible.

    In our ____  (8)  ____ life, we can do many things to prevent waste ____  (9)  ____ happening, for example, turn off the water taps (水龙头) when we finish washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by. little, everything will ____  (10)  ____ . Waste can be stopped one day, if we do our best.

When people think of tigers, they think: strong and dangerous. But now, the big animal is calling for our help.

There were once eight kinds of 16 ______in the world, but three died out during the 20th century. In the last 70 years, the 17       _____   of Siberian tigers (东北虎) has gone from as many as 300 to 18 _____22 somewhere. The Siberian tiger has been1 9  ______ dying out completely.        If the government doesn't make any efforts, it's quite 20  ______that there  will be no more Siberian tigers in China in ten to twenty years.

In order to double the number of wild tigers in the21 _____ ten years, the World Wildlife Fund (世界自然基金会) has started a program recently. It aimed to（目的在于）save wild tigers and put an end to tiger hunting and 22 ____.China, together with twelve other 23 ______, has joined in.

Wild animals, such as red deer and wild pigs, are the main 24 ______of the tigers. The hunting of these animals is the greatest threat(危险) to tigers. So the most important thing is25 ______the animals that tigers eat. To protect the wild tigers, we need to call on more people to stop eating and hunting wild animals.

Flies (苍蝇) usually live in the dirty places.

Let’s look at a fly, and see where it   (1)  . First, it flies out of the window,   (2)   it stands on   (3)   dirty things in the street, and then it flies back to the house and walks over your   (4)  .

When a fly walks on the dirty things in the street, its   (5)   have got some germs   (6)   them. When the fly walks on your food with its dirty feet, it   (7)   the germs on your food.

What can you   (8)   this?

First, we learn that we mustn’t leave dirty things in the street or on the ground near   (9)  . Second, we learn that all food must be covered so that flies may not   (10)   it. Third, we learn that flies often carry germs and we must kill them as soon as we see them.

A city withoutcars would be very strange, right? But Venice(威尼斯) is such a city.

Venice is in thenortheast of ________(21)_. It wasn’t built on land, like Beijing or Shanghai, but on more than 110 islands. Seawater is everywhere _________(22)_ the city.

Even so, travel isn’t so difficult. The waterways have always been the best way to get around. There are 117 waterways and more than 400 __________(23) that can lead you where you want to go.

People in Venice move from place to place by __________(24)_. They like to enjoy cool summer nights while taking boat trips. They can _______(25)_ other people as they go along.

Venice grew out ofsmall islands in saltwater lakes when some Italians escaped（逃脱) from a war more than 1,500 years ago and built homes there._________(26) makes the city special, but it is also a big problem.

Once people used too much underground water. This made the city get _______(27)_ little by little. Now the city has gone down by 23 centimetres. Every year, high water hit the city in autumn and winter. When _________(28) water comes, more than half of the city is under water.

Another problemis the rising seawater. The _________(29)_ has risen over the years. This has made Arctic(北极的)ice melt（融化）．Scientists aretrying different ways to stop the city from getting even __________(30).

A

Which of your two hands do you use most? Very few of us can use   (1)  of our hands well. Most of us are right-handed. Only about five people out of a hundred are left-handed. New-born babies can hold things with both of their hands,  (2)   in about two years they usually like to use their right hands. Scientists have found that monkeys like to use one of their hands   (3)  than the other, but it can be either hand. There are as many right-handed monkeys as there are left-handed. Most people use their right hands, and this makes life  (4)  for the left -handed people. We live in a   (5)  world.

How do you imagine the future? Will life in the future be better, worse or the same as now？__  (1)  __ do you think of the future?

People __  (2)  __ that life will probably be very different in 2050.First of all, planes will be very __  (3)  __ so flying will be very cheap.Everyone will have a small car.Fuel will be new and clean, but expensive.We will __  (4)  __ robots everywhere.And space planes will take us around the world __  (5)  __ two hours.Homes will be warm in winter and cool in summer, so they will be very comfortable.We will use the sun to __  (6)  __ our homes.Computers will be very small so they will be very __  (7)  __.People will do many things on the Internet.

At that time, water will become one of our most __  (8)  __ problems.In many places, farmers will be in great need of water to __  (9)  __ fruit and vegetables.

By 2050, we will be able to help blind and deaf (聋) people see again and __  (10)  __ again.At that time, our life will become better and better.