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    9．Earth is becoming more and more ． 【查看更多】

     

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    Earth is becoming more and more polluted. ______, people will move to Mars one day.

    A．In order to B．So that
    C．As a result D．Because of

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    Earth is becoming more and more polluted. ______, people will move to Mars one day.
    A．In order toB．So that
    C．As a resultD．Because of

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    (C)The earth is not only, but also thirsty for water. This may seem strange to you. because nearly 70% of the earth’s surface（表面）is covered with water. But about 97% of that is sea water, or salt water. Man can only use the other 3%—the fresh water from rivers, lakes, and other sources. And we can’t even use all of that, because some of it is in the form of icebergs and glaciers（冰川）. Even worse, some of it has been polluted.
    However, as things stand today, the fresh water is still enough for us. But our need for water is becoming larger and larger quickly—almost day by day. We should take steps to do with this problem now and in this way we can get away from a serious world-wide water shortage later on.
    We all have to learn how to stop wasting our valuable water, one of the first step is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer system(下水道), from there it returns to sea or runs into underground (地下)places.
    But even if every large city reused its water, we still would not have enough. All we’d have to do to make use of sea water in the world is to remove the salt.
    小题1: The earth is thirsty for water because_______ .
    A．man has not enough food to eat.
    B．we haven’t had enough fresh water
    C．only 70% of the earth’s surface is covered with water.
    D．more water is sent into the sewer system
    小题2:The underlined word “valuable ” means _______.         .
    A．much and saltB．fresh and enough
    C．dear and usefulD．clean and helpful
    小题3: What can we do if we want to have enough fresh water?
    (a) make good use of the sea water.
    (b) carry salt water into lakes and rivers.
    (c) try to save the fresh water as much as possible
    (d) do our best to use the water again.
    (e) drink and use all the water on the earth’s surface
    A．(c)and(e)B．(a) and (b)
    C．(a), (c)and(d)D．(b) , (d) and(e)
    小题4: The best but the most difficult way to solve the water problem of the world is to ___
    A．remove the salt from the sea water
    B．make the water in the cities clean.
    C．take the water from underground
    D．make the need for the water smaller.
    小题5: What is the best title for this passage?
    A．The Importance of WaterB．The World’s Water Problem
    C．The Thirsty WorldD．Fresh Water and Sea Water

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    March 20th is World Water Day every year. According to a report from the United Nations, more than half of the world's major rivers have serious water loss and are polluted.
    The Yellow River, the world's fifth longest river, watered some of the oldest farms on earth. But now it has a serious problem.    【小题1】   In most of the past 35 years, it didn't reach the sea.
    The Nile in Egypt, running 6, 650 km, is the longest river in the world. 【小题2】Now it is down to 2 billion m' or so.  Australia's Murray River reaches the sea only every other year.  One fifth of America's Rio Grande has no water, either.
    ____【小题3】   
    Mostly it's damming (筑坝) and global warming that make rivers dry.
    ____【小题4】   Now about 45, 000 of them lie across the world's rivers. They hold back around 15% of the world's fresh water from running to the sea.
    Global warming is making things worse. Warmer weather takes water away.  The glacier (冰川) are becoming smaller.   【小题5】   Global warming has had certain effects on water sources (源头). Droughts (干旱) happening around the world make people pay more attention to this fact.
    A．Dams hold water to irrigate (灌溉) fields and make power.
    B．The source of the Yellow River is drying up because of it.
    C．It used to carry 32 billion m' of water a year.
    D．How does it happen?
    E. Factories pour waste water into rivers directly.
    F. Its source on Qinghai-Tibet Plateau is drying up.
     

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    The world itself is becoming much smaller by using modern traffic and modern communication. Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution.
    To pollute means to make things unfit or unclean to use. Pollution comes in many ways. We see it, smell it, drink it and even eat it. Pollution is beginning to threaten (威胁) our health, our happiness and our life.
    Man has been polluting the earth from the time he first made fire, washed his clothes in the river and threw his waste on the ground. When land was used up or water became dirty, men moved on to another place. At first, the problem was not so serious because there was plenty of clean air, land and water. There weren’t so many people then and their wants fewer. All the dirty things could be absorbed(吸收) by nature and soon covered over. But this is no longer true. The increase of pollution and the development of industry(工业) have changed that. Man is slowly poisoning(毒害)not only his environment but also himself.
    Through the use of poison, man has polluted the land, killing the animals. By putting dirty water and chemicals into rivers and lakes we have polluted our drinking water, killing the fish.
    Our increasing population is part of the problem. More people, more waste.
    Where is this all to end? Are we turning the world into a big rubbish dump(堆存处)，or is there any hope that we can get rid of (摆脱，除去) the pollution? Luckily, millions of people have been warned of the danger of pollution. Large numbers of people are now working hard to bring pollution under control.
    The earth is our home. We must take care of it. This means keeping the land, air and water clean. And we must take care of the rise in pollution at the same time.
    【小题1】Which of the following is NOT true according to the passage?

    A．We live on the earth, so we should look after it.
    B．Man is fighting against different kinds of pollution.
    C．To pollute means to make air, water and land unfit for use.
    D．All the waste produced by modern industry can be absorbed.
    【小题2】In Paragraph4, the underlined word “chemicals” mean ____________.
    A．化学物质B．医疗器械C．污染源D．塑料制品
    【小题3】Through the uncontrolled use of poison man has___________.
    A．made the drinking water dirtyB．polluted the land
    C．killed the animals D．all of the above
    【小题4】From the sentences “More people, more waste.” We know that ___________
    A．we need more people, not more waste
    B．the increase of population caused more waste.
    C．there isn’t any hope that we can get rid of the pollution
    D．More people have been warned of the danger of more waste.
    【小题5】Which of the following is TRUE according to the passage?
    A．Man begins to understand the pollution.
    B．Man doesn’t know how to control pollution.
    C．Man is doing something to control pollution.
    D．Man still doesn’t realize how serious pollution is.

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