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    B Since the earliest times,trees have always been very useful and important to man who made use of them in many ways for his daily life.Today trees continue to play a very important part in many ways.They provide man with fruits,fuel for burning,wood for building and furniture.You can imagine what would happen if there were no trees in the world in which we're living. In the tropics where it's very warm throughout the year,trees protect man from the heat of the hot sun.They are also very useful in protecting good and rich topsoil from being washed away,as there are many heavy rains there. Without trees and grass,heavy rains would wash away the rich surface soil which is so essential for agriculture.The result is that the land becomes useless and unproductive. There are many desert areas in the world,which used to be very rich and fertile areas.But people in ancient times cut down trees indiscriminately and no new trees were planted.When strong winds came,they blew away the rich surface soil and for this reason the land was ruined into useless deserts where nothing could grow. 6.From the passage,we know . A.some deserts were once fertile lands B.some deserts were once poor and useless lands C.deserts used to be covered by stones D.deserts once were sea 7.Topsoil is . A.good for raising sheep and cows B.good for agriculture C.useful for trees to grow D.found only by the rivers 8.If there were no trees, . A.the land would become dry B.heavy rains would come C.the rich topsoil could not be held back D.the rain would be necessary for man 9.According to the passage,which of the following statements is wrong? A.Man still depends on trees in his daily life. B.Heavy rains and winds can cause the loss of the topsoil. C.If people grow a certain number of trees,they can cut down trees as they will. D.Trees can not only prevent the heat of the hot sun but also can keep soil from being washed away in the tropics. 10.A good title for this passage is . A.Rich Land and Desert B.Not Going against the Nature C.The Importance of Trees D.How to Prevent Soil Being Washed Away 【查看更多】

     

    题目列表(包括答案和解析)

    　　Since the earliest times, trees have always been very useful and important 　　1　　 man who made use of them 　　2　　 many ways．Even today trees continue to serve man in so many ways．Trees supply man 　　3　　 fruits and building material in the form of 　　4　　．Without trees it would be 　　5　　 to build houses, boats, and even bridge．Furniture 　　6　　 tables, chairs and beds is made 　　7　　 wood．

    　　In the tropics 　　8　　 is very hot throughout the year, trees protect man from the terrible heat．They are also useful in preventing good and rich top soil from 　　9　　 away during heavy rains which are 　　10　　 in the tropics．If there were no trees of vegetation of some kinds 　　11　　 back the soil with their roots, heavy rains would wash away the rich surface soil 　　12　　 is so important and necessary to agriculture．The result is 　　13　　 the land becomes a desert．

    　　There are so many desert areas in the world．　　14　　 these desert areas must have been very rich fertile areas, but 　　15　　 our ancestors(祖先)in the distant past did not have enough knowledge about science of 　　16　　 nature, they 　　17　　 all the trees in the areas 　　18　　 they lived and never planted new ones．　　19　　, the rich soil was blown away and washed away by strong winds and heavy rains．In the end the land was turned 　　20　　 useless deserts where nothing could grow．

    (1)
    [　　]

    A．

    of

    B．

    for

    C．

    to

    D．

    as

    (2)
    [　　]

    A．

    on

    B．

    in

    C．

    by

    D．

    with

    (3)
    [　　]

    A．

    with

    B．

    of

    C．

    from

    D．

    on

    (4)
    [　　]

    A．

    leaves

    B．

    branches

    C．

    roots

    D．

    wood

    (5)
    [　　]

    A．

    possible

    B．

    important

    C．

    necessary

    D．

    impossible

    (6)
    [　　]

    A．

    for example

    B．

    such as

    C．

    look like

    D．

    seem

    (7)
    [　　]

    A．

    from

    B．

    by

    C．

    into

    D．

    of

    (8)
    [　　]

    A．

    there

    B．

    where

    C．

    where it

    D．

    which it

    (9)
    [　　]

    A．

    taking

    B．

    washing

    C．

    being washed

    D．

    being run

    (10)
    [　　]

    A．

    so common

    B．

    so little

    C．

    so few

    D．

    so small

    (11)
    [　　]

    A．

    coming

    B．

    holding

    C．

    going

    D．

    getting

    (12)
    [　　]

    A．

    where

    B．

    that

    C．

    it

    D．

    there

    (13)
    [　　]

    A．

    because

    B．

    which

    C．

    that

    D．

    why

    (14)
    [　　]

    A．

    Since a long time

    B．

    A long time ago

    C．

    For a long time

    D．

    In a long time

    (15)
    [　　]

    A．

    since

    B．

    also

    C．

    when

    D．

    while

    (16)
    [　　]

    A．

    the

    B．

    a

    C．

    in

    D．

    不填

    (17)
    [　　]

    A．

    planted

    B．

    watered

    C．

    cut down

    D．

    hurt

    (18)
    [　　]

    A．

    where

    B．

    in which

    C．

    there

    D．

    which

    (19)
    [　　]

    A．

    More or less

    B．

    By and by

    C．

    By the way

    D．

    Instead of

    (20)
    [　　]

    A．

    on

    B．

    off

    C．

    over

    D．

    into

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    完形填空

    　Since the earliest times, trees have always been very useful and important to man who made use of them in many ways for his daily life．Even today trees continue to ___1___ man in so many useful ways．

    　They provide man ___2___ fuel for burning and building material in the form of

    ___3___ ．Without trees it would not be ___4___ to build houses, boats and ___5___ bridges．Furniture such as tables, desks, and chairs___6___ also made of wood．

    　In the tropics（热带地区）___7___ it is very warm throughout the year, trees ___8___ man from the hot sun．They are also useful___9___ preventing good and fertile top soil from being washed away ___10___ heavy rains which are so ___11___ in the tropics．

    　If there are ___12___ trees or grass to keep the soil ___13___ their roots, heavy rains would wash away the ___14___ surface soil which is so important for agriculture．The result is that the land becomes ___15___ and can not produce anything．

    　There are many desert ___16___ in the world．A long long time ago, these areas ___17___ have been very rich, but because of ignorance（无知）people ___18___ old times cut as many trees as they liked．They never took trouble to ___19___ new trees．Strong winds slowly blew away the rich surface soil and finally the land was ___20___ into useless deserts where nothing could grow ．

    　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　 　　

    (1) A．provide

    B．serve

     C．supply

    D．give

    [　　]

    (2) A．for

    B．in

     C．by

    D．with

    [　　]

    (3) A．forest

    B．Woods

    C．wood

    D．trees

    [　　]

    (4) A．possible

    B．Possibly 

    C．perhaps

    D．maybe

    [　　]

    (5) A．yet

    B．also

    C．too

    D．even

    [　　]

    (6) A．is

    B．are

    C．was

    D．were

    [　　]

    (7) A．when

    B．that

    C．where

    D．while

    [　　]

    (8) A．stop

    B．protect

    C．keep

    D．prevent

    [　　]

    (9) A．in

    B．at

    C．from

    D．with

    [　　]

    (10)A．during

    B．in

    C．at

    D．after

    [　　]

    (11)A．often

    B．ordinary

    C．common

    D．usual

    [　　]

    (12)A．many

    B．no

    C．any

    D．not

    [　　]

    (13)A．with

    B．by

    C．to

    D．into

    [　　]

    (14)A．poor

    B．stony

    C．bad

    D．rich

    [　　]

    (15)A．good

    B．lower

    C．useless

    D．useful

    [　　]

    (16)A．place

    B．lands

    C．areas

    D．land

    [　　]

    (17)A．should

    B．must

    C．ought

    D．can

    [　　]

    (18)A．in

    B．since

    C．before

    D．after

    [　　]

    (19)A．plant

    B．produce

    C．keep

    D．provide

    [　　]

    (20)A．made

    B．taken

    C．turned

    D．grown

    [　　]

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