练习册

  • 练习册
  • 试题
    A. clean and fresh B. in rivers and lakes C. enough D. dirty 【查看更多】

     

    题目列表(包括答案和解析)

      Napoga  is a 12—year---old  girl in Ghana, Africa. It is hard for her family to get clean water . Every morning , she leaves home at half past five to get clean water for her family in a village far away . It takes her six hours to get enough clean water for daily cooking and drinking. She has no time to go to school or to play with her friends. Millions of people in the world are like Napoga . They can’t get enough clean water to keep healthy.
    Earth Day is April 22. But on all other days, we must also remember it. The water we use is the most important natural resource(自然资源)on the earth.
    Water covers 70 perent of the earth’s surface (表面). But most of that is sea water. We can’t use it for very many things.  Fresh water covers only one percent of the earth’s surface.
    You probably feel lucky that your life isn’t as hard as Napoga’s . But that doesn’t mean you don’t have to worry about water. We all face serious water problems. One of them is water pollution. All kinds of things from cars, factories, farms and homes make our rivers , lakes , and oceans dirty. Polluted water is very bad for people to drink. And dirty water is bad for fish , too. Now, thirty-four percent of all kinds of fish are dying out.
    How do cars and factories make our water dirty? First, they pollute the air. Then , when it rains, the rain water comes down and makes our drinking water dirty. Dirty rain, called acid rain(酸雨), is also bad for plants ,animals and buildings.
    Scientists say that in 30 years, more than half of the people in the world won’t have enough clean water. We have to learn how to save more water for ourselves  and our children. Here is some advice for saving water:
    ● Turn off the water while you brush your teeth. You can save as much as 450liters(升)each month.
    ● Leaky taps （漏水的龙头）waste a lot of water. Fix them right away.
    ●You can easily cut your 10—minute showers in half---and you’ll be just as clean.
    ●When you wash dishes, don’t let the water run.
    ●Only wash clothes when you have a lot to wash. If your washing machine isn’t full , you are wasting water!
    根据材料内容，选择最佳答案，并将其标号填入题前括号内。
    小题1:Every morning Napoga went to get clean water _________.
    A．before she went to school
    B．after she finished school
    C．without going to school
    D．after she played with her friends
    小题2:On the earth, _______________.
    sea water is  more widely used than fresh water
    B.there is very little water for our living
    C.there is 71 percent of fresh water
    D.we don’t need to worry about water
    小题3:Acid rain____________________________.
    A．is only bad for living things.
    B．can be produced in factories
    C．doesn’t do harm to people , but it’s bad for plants, animals and buildings.
    D．doesn’t just do harm to human beings but to animals, plants and buildings.
    小题4:Which of the following wastes water?
    A．We need ten minutes if we want a clean shower.
    B．We should put in enough clothes when we wash them in washing machines.
    C．You can keep yourself clean by having a shower for five minutes.
    D．Don’t let the water run when we brush our teeth and wash dishes.
    小题5:What’s the main idea of the passage?____________.
    A．Something must be done to prevent water from being polluted.
    B．Clean water means much to human beings and living things around us.
    C．It’s time to take care of the water we use.
    D．Water is the most important natural resource on the earth.

    查看答案和解析>>

    This year,we have met a once-a-century drought( 旱灾 )in Yunnan. It makes us water is the “life blood”of our earth. Like air and sunshine,It is very important to livingthings. Without water,there can be life on the earth. All animals and plants need water. Man also needs water. We need water to drink,to cook and to clean . It even the greater part of our bodies.

    Water is almost everywhere. Even in the places of the world,there is water in the air. However,we can not drink sea water fresh water.

    To make things even worse,people often to keep the water clean. They throw rubbish into rivers,lakes and seas. So not all the fresh water is for us to drink. a member of the earth,we mustn’t waste water any more. Something must be to protect water.

    1.A. to know B. knowing C. know D. knows

    2.A. none B. not C. much D. no

    3.A. himself B. ourselves C. him D. our

    4.A. made of B. makes up C. makes D. made in

    5.A. drier B. wetter C. driest D. beautiful

    6.A. or B. so C. and D. but

    7.A. decide B. fail C. try D. take

    8.A. clean enough B. enough clean C. enough good D. dirty enough

    9.A. For B. To C. As D. At

    10.A. done B. did C. doing D. do

     

    查看答案和解析>>

    阅读理解。
                                                        The world's water shortage  
         The world is not only hungry, but it is also thirsty for water. This may seem strange to you, since
    nearly 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%-the fresh water from rivers, lakes, underground, and
    other sources. And we can not even use all of that. Even worse, some of it has been made dirty.?
          However, as things stand today, this 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 worldwide water shortage (缺少) later on.?
          We all have to learn how to stop wasting our valuable water. One of the first steps 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 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. If we take these steps we'll be in no danger
    of drying up.?
    1. The world is thirsty for water because            .?
    [     ]
    A. man hasn't got enough food to eat
    B. we haven't got enough fresh water
    C. only 70% of the earth's surface is water
    D. more water is sent into sewer systems
    2. The underlined word "valuable" means             .?
    [     ]
    A. much and salty?
    B. fresh and enough?
    C. dear and useful?
    D. clean and helpful?
    3. What should we do if we want to have enough fresh water?
        (a) Make full use of the sea water.?
        (b) Carry salt water into lakes or 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 (d)?
    C. (a), (c) and (d)
    D. (b), (d) and (e)?
    4. The best but the most difficult way to solve (解决) the water problem of the world is to             .?
    [     ]
    A. remove the salt from sea water
    B. make the water in cities clean
    C. take water from underground ?
    D. make the need for water smaller ?
    5. What's the best title (标题) for this passage??
    [     ]
    A. The Importance of the Water?
    B. The World's Water Problem?
    C. The Thirsty World ?
    D. Fresh Water and Sea Water?

    查看答案和解析>>

    阅读理解：

    　　The world is not only hungry, but it is also thirsty for water．This may seem strange to you, since nearly 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% the fresh water from rivers, lakes, underground and other sources．And we can not even use all of that．Even worse, some of it has been made dirty．

    　　However, as things stand today, this 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(缺少)later on．

    　　We all have to learn how to stop wasting our valuable water．One of the first steps 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 places．

    　　But even if every large city used 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．If we take these steps we’ll be in no danger of drying up．

    (1)

    The world is thirsty for water because________．

    [　　]

    A．

    man hasn’t got enough food to eat

    B．

    we haven't got enough fresh water

    C．

    only 70% of the earth's surface is water

    D．

    more water is sent into sewer systems

    (2)

    The underlined word valuable means ________．

    [　　]

    A．

    much and salty

    B．

    fresh and enough

    C．

    dear and useful

    D．

    clean and helpful

    (3)

    What should we do if we want to have enough fresh water?

    a．Make full use of the sea water．

    b．Carry salt water into lakes or 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 a11 the water on the earth's surface．

    [　　]

    A．

    c and e

    B．

    a and d

    C．

    a, c and d

    D．

    b, d and e

    (4)

    The best but the most difficult way to solve the water problem of the world is to ________．

    [　　]

    A．

    remove the salt from sea water

    B．

    make the water in cities clean

    C．

    take water from underground

    D．

    make the need for water smaller

    (5)

    What's the best title(标题)for this passage?

    [　　]

    A．

    The Importance of the Water

    B．

    The World's Water Problem

    C．

    The Thirsty World

    D．

    Fresh Water and Sea Water

    查看答案和解析>>

    阅读理解(15分)

    　　The world is not only hungry，but it is also thirsty for water．This may seem strange to you，since nearly 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 % ——the fresh(清新的)water from rivers，lakes，underground，and other sources．And we can not even use all of that．Even worse，some of it has been made dirty．

    　　However，as things stand today，this fresh water is still enough for us．But our need for water is becoming larger and larger quickly-almost day by day．Only if we take steps to do with this problem now can we 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 steps is to develop ways of refusing it．Today in most large cities，water is used only once and then sent out into a sewer system(下水道系统)．From there it returns to the sea or runs into underground 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(清除)the salt．If we take these steps we'11 be in no danger of drying up．

    (1)

    The world is thirsty for water because ________．

    [　　]

    A．

    man hasn't got enough food to eat

    B．

    we haven't got enough fresh water

    C．

    only 70 % of the earth's surface is water

    D．

    more water is sent into sewer systems

    (2)

    The underlined word valuable means ________．

    [　　]

    A．

    much and salty

    B．

    fresh and enough

    C．

    dear and useful

    D．

    clean and helpful

    (3)

    What should we do if we want to have enough fresh water？

    (a)make full use of the sea water

    (b)carry salt water into lakes or rivers

    (c)do our best to use the water again

    (d)try to save the fresh water as much as possible

    (e)drink and use all the water on the earth's surface

    [　　]

    A．

    (c)and(e)

    B．

    (a)and(d)

    C．

    (a)and(d)

    D．

    (b)，(d)and(e)

    (4)

    The best but the most difficult way to solve(解决)the water problem of the world is to ________．

    [　　]

    A．

    remove the salt from sea water

    B．

    make the water in cities clean

    C．

    take water from underground

    D．

    make the need for water smaller

    (5)

    What's the best title(标题)for this passage？

    [　　]

    A．

    The importance of Water

    B．

    The World's Water Problem

    C．

    The Thirsty World

    D．

    Fresh Water and Sea Water

    查看答案和解析>>


    同步练习册答案