In China, safety education is becoming more and more important now. The last Monday in March is for students to learn it at school. It helps students learn (86)m   ▲   about what  they should do to (87) k   ▲   themselves safe. What are the accidents at school? Take a look.
    Stampedes（踩踏）, earthquakes and fires are the (88) m   ▲    accidents at school.
    A stampede always (89) h   ▲    in crowded places. When students around you begin to push, just stand there and try to hold onto something. If you fall down in the crowd, move to one side and (90) p   ▲    your head with your hands around.
   When earthquakes happen, you can get under a (91) d   ▲    quickly and hold on. It’ll protect you from falling things. If you are outdoors, find a place (92) a   ▲    from buildings, trees, and power lines.
   When there’s a fire, (93) l   ▲    the classroom quickly. It’s better to put something wet over your (94) m   ▲    and nose. In this way, you won’t breathe in smoke. Many people die in a fire, not because of the fire but smoke. It makes them cough and they can’t breathe. That’s very dangerous!  So when you want to get out, you should make yourself (95) c   ▲    to the floor. Then you can breathe some fresh air.     

86._____        87._____           88._____       89._____        90._____        
91._____        92._____           93._____       94._____        95._____       

here are four inventions.

1  when it raina, do your shoes get wet ? Of course, they do! But you can buy these clever Umbrellas For Shoes. They keep the rain off your feet.

2  Do you have to clean the floor at home? Perhaps your cat can do a better job than you. Buy these Cleaner Cat Brushes. Then you can sit back and relax!

3   Do you talk too long on the phone? Most people do ! Save time---buy the Exercise Telephone! It weighs five kilograms. Then your calls will be less than five minutes long.

4   Do your friends sometimes come up behind you and make you jump? Do cars come around the corner when you try to cross the road ? Well, it won’t be a problem if you have Two-Way Glasses. You can look at things behind and in front of you at the same time.

Dolphins talk with sounds. They show their feelings with sounds.

Dolphins travel in a group. We call a group of fish a “school”. They don’t study, but they travel together. Dolphins are mammal（哺乳动物）, not fish, but they swim together in a school.

Dolphins talk to the other dolphins in the school. They give information（信息）. They tell when they are happy or sad or afraid. They say “welcome” when a dolphin comes back. They talk when they play.

They make a few sounds above(在···上面) water. They make many more sounds under water. People can’t hear these sounds because they are very, very high. Scientists make tapes of the sounds(录音) and study them.

Sometimes people catch a dolphin for a large zoo. People can watch the dolphin in a show. Dolphins don’t like to be away from their school in a zoo. They are sad and lonely.

There are many stories about dolphins. They help people. Sometimes they save somebody’s life. Dolphin meat is good, but people don’t like to kill them. They say that dolphins bring good luck. Many people believe this.

The world is not only hungry but also thirsty for water. This may seem strange to you, since   (1)  

70% of the earth’s surface is covered with water. But about 97% of that is sea water or salt water. Man can only drink and use the other 3% of   (2)   water from rivers, lakes, underground and so on. And we can not even use all of that   (3)   some of it has been made dirty.

Earth Day is on April 22. But on all other days, we must also remember how important water is. The water that we use is the most important natural resource   (4)   the earth. Today we   (5)   serious water problem. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers, lakes and oceans   (6)  . Polluted water is very bad for people to drink. And dirty water is bad for fish, too.

How do cars and factories make our water dirty? First they polluted the air. Then when it   (7)  , the rain water makes our drinking water dirty. Dirty rain, called acid rain, is also bad for plants, animals and buildings. Scientists say that in 30 years, more than half of the people in the world   (8)   have enough clean water. We have to learn how to stop   (9)   water. The first step is to develop ways of reusing it.

Even though every large cities   (10)   its water, we would still not have enough water. So we should make use of sea water by removing the salt in it. If we can take these steps, fresh water won’t be used up.

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.

     Today we can see that many people are cutting down the trees in the forests. A lot of rich land has become   41 . If we read newspapers, we’ll learn that the forests on the earth are getting smaller   42 . We are cutting down large number of trees   43  we need wood. Some scientists say that there will not be any great forests   44  20 or 30 years.

         What will happen if the forests disappear? A lot of plants will die and the animals will   45  their homes. In many places the new farmland will soon   46  the old desert. Crops will not grow there. There won’t be enough   47 , and the weather will get hot and dry. If the climate of the earth changes, life will be   48  for everyone. Our living environment will become worse and worse. More and more rich farmland will disappear. We will suffer a lot of from both droughts (干旱) and floods.

       So it’s our duty   49  the forests well. Everyone should try his best to make a contribution (贡献) to taking care of the forests. Stop   50     down the trees and make the world greener.

It is said that eyes can speak. Do you have such kind of 36 ? In a bus you may look at a stranger, but not too 37 . If he notices that he is being looked at, he may  38  uncomfortable. It is the same in daily life.

When you are looked at for several more times, you will look 39 up and down in order to 40 if there is anything wrong with you. If 41 goes wrong, you will feel angry with the person who is looking at you, 42 can speak, right?

Looking too long at someone may seem to be impolite. But sometimes things are 43 . If you wish to draw someone’s 44 , you may look at him or her more than ten seconds. For lovers, they enjoy looking each other longer to show the love that words cannot  45  .

Clearly, eye communication should be done according to the relationship between the two people and the certain situation.

    Today many people are cutting down the trees in the forests. A lot of rich land has become   (1)    .If we read newspapers, we’ll learn that the forests on the earth are getting   (2)  all the time. We are cutting down lots of trees because we need  (3)   . Some scientists say that there will be not any great forest   (4)     20 or 30 years.

      What will happen if the forests disappear? A lot of plants will die    (5)   the animals will lose their home. In many places new farmland will soon look like olddersert.Cropswill not  (6)    there .There won’t be enoughrain,andthe weather get hot and   (7)    .If the climate of the earth changes, our living environment will   (8)    become worse andworse.Moreand more rich farmland will  (9)   .We will suffer (遭受) a lot from both droughts and floods.

  It’s our duty to protect the forests well.   (10)  

The universe(宇宙) is really mystical（神秘的）. Scientists have done lots of study about it but there is still much they haven’t   (1)   .

Scientists think that people   (2)   on the earth for many many years. However , we haven’t found life on any other planet yet .

There are eight planets going   (3)   the sun . The earth is one of them . There are humans , animals , plants and many other kinds of life on the earth . There is water and air , too . And compared to the other planets , the earth is not too hot or too cold .   (4)   of seven other planets has an environment like that of the earth . So the earth is our only home.

The sun and its planets are called the solar system（太阳系）, and our solar system is a small part of a much larger group of stars and planets , called the Galaxy（银河）or the Milky Way（银河系）. There are over 200 billion   (5)   in the Galaxy, and our sun is only one of them.

There are many other galaxies in the universe as well. Their light has to travel for many years to reach us. So   (6)   is the universe? It is impossible to imagine.

Scientists have sent spaceships（宇宙飞船）to the planet Mars to take photos . They have even sent spaceships to travel outside the solar system .   (7)   them , now we have a better understanding of many planets around us . However, no spaceship has traveled   (8)   to reach other stars in our Galaxy.

When we see stars twinkling（闪耀）in the sky   (9)   , we may think a lot : with so many stars in the universe , is there life out there in space ? If there is life on other planets, what life will be like there? What transports(交通工具) do they use to travel ? Why don’t they  (10)   us ? The universe is still a huge mystery.