Many animals use some kind of “language”. They use signals(信号)and the signals have meanings. For example, when a bee(蜜蜂) has found some food, it goes 1 home. It is 2 for a bee to tell 3 bees where the food is by speaking to 4, but it can do a little dancing. This tells the bees where the food is and 5 it is.

    Some animals show how they feel by making sounds. It is not difficult to 6. If a dog is angry, it barks(吠). Birds make several different sounds and 7 has its own meaning. Sometimes we humans make sounds 8. We make sounds like “Oh!” or “Ouch!” to show how we feel about something or when we 9 something on our feet.

    We humans have languages. We have words. These words have the meaning of things, actions(行动), feelings or ideas. We 10 give each other information. Writing down words, we can remember what has happened or send messages to people far away.

根据短文内容及首字母提示,填写所缺单词。

    Hip-hop dancing(街舞) is popular with many young people today. They like it b{#blank#}1{#/blank#} they can invent their own moves. They use this dance to s{#blank#}2{#/blank#} their love for life. It a{#blank#}3{#/blank#} shows that they feel good about life, that they just want to be themselves and enjoy life, and that they are not afraid of problems.

    Hip-hop dancing has a h{#blank#}4{#/blank#} of more than 20 years. It f{#blank#}5{#/blank#} began in the 1980s in the US. In early times, it was seen in New York and Los Angles. At that time, many young black people often danced to the m{#blank#}6{#/blank#} in the streets. They used their l{#blank#}7{#/blank#}, arms, heads and even shoulders to dance. Many young people still use most of these moves today.

    Hip-hop dancing became popular all over the world because of the 1983 movie Flashdance. Some people performed Hip-hop dancing in the movie People enjoyed their performance. They began to dance l{#blank#}8{#/blank#} them. Then it became popular There are t{#blank#}9{#/blank#} kinds of Hip-hop dancing: new school and old school. More and more young people are l{#blank#}10{#/blank#} Hip-hop dancing. People believe that it is a good way to exercise their bodies, and that it is good for their health.

    How could we live without the Internet? That's1most of us keep in touch with friends, find cool places to visit, or get the latest2. We can use it to do homework, find out what new movies are on, get information3a college (大学) we're thinking about, or find a job. Almost(几乎)4we can think of has a website about it.

    5you've heard stories about people who are cheated(被骗) in chat rooms. Some users don't tell others their true names. Everyone in the chat room looks like6a mask(面具). Some people may want to do something7in it. They will sometimes ask visitors for their information. The information might be about their families, or where they8. It shouldn't be given away. This might9you or your family.

    Of course, the Internet is home to millions of places you can and should visit. However, remember to10yourself while online.

    Can you imagine that we could build a beautiful city with rubbish? Maybe you will think it is1. However, it can be true! Nothing is a waste if we have a creative mind. Let me show you something about2rubbish.

    Sometimes we can see tons of rubbish in the streets, on the roads, near the buildings... here and there. Many large cities became so ugly3it. Nobody likes rubbish, but in fact, some rubbish can be used again. All of us want to solve the problem, we must do something to4rubbish. We should take action from now on.5, some good things will not be wasted.

    Do you often throw away things you don't need any more? Have you ever thought about how these things can actually be put to good use? For Example, when a car gets too old, it may not run any more. But we can use the metal of the car to make something else. When a bottle is empty, it6as waste. You don't know bottle glass can be made into sand and used to build streets. Rubbish7food can be changed into fertilizer to make plants grow better. It is cheap and safe. And other rubbish can also be used to make building blocks. Now,8machines are designed for that.

    9, people will watch films in a beautiful cinema which is built out of rubbish. Besides buildings and roads, cities may be made from rubbish. But so far, building beautiful cities made from rubbish is only10.

    It says that bats (蝙蝠) are almost blind (瞎的). Do you know 1 the bat finds the way? In fact (事实上), bats find their ways 2 the help of their ears. Bats make a 3 that we can't hear at all. They cry when they fly and the echoes (回声) of these cries come back to their 4. In this way they can know where they should go. Bats fly out in the 5. In the daytime, they just stay together in their homes.

    When the evening comes, they begin to 6 and look for 7. The next morning, they come back from work to sleep 8 the evening. Some people 9 that bats are bad animals. In fact, they are very 10. They catch and eat pests (害虫). This is very good for people.

    Researcher Robert Engelman from Population Action International says by the year 2025 about 3000 million people may lack water. At least 18 more countries are expected to have serious water problems. The need for water keeps increasing.

    Mr Engelman says the population in these countries that lack water is growing faster than in other parts of the world. The report says lack of water in the future may result in(导致)several problems. It may even increase1problems. Lack of water often means drinking water isn't safe. Mr Engelman says there are problems all over the world because of diseases, Lack of water may also2more international con flint(冲突), Countries may have to compete for water in the future. Some countries, such as Egypt, the Netherlands, Cambodia, now get sixty percent of their fresh water from other countries. And the report says lack of water would affect(影响)the ability of developing to improve their economies. This is3new industries(工业)offer need a large amount of water when they are beginning.

    The Population Action International study gives several solutions4the water problem. One way, it says, is to find ways to use water for more than one purpose.5way is to teach people to be careful and not to waste water. A third way is to use less water of agriculture, The6also says long-term(长期的)ways of dealing with the water problem must include controls on population growth.