Trees can often prevent floods and . (dry) 查看更多

 

题目列表(包括答案和解析)



【小题1】Trees can get light from       in the daytime.

A.C02B.O2C.the sunD.the moon
【小题2】Chlorophyll is in         .
A.sunlightB.soilC.airD.leaves
【小题3】We can get more O­2 by         .
A.planting more trees
B.cutting trees down
C.making the water in soil(土壤) polluted
D.making more CO2
【小题4】CO2 from air and      can produce food  for trees with the help of chlorophyll and sunlight.
A.water in the seaB.water from soil
C.water in the riverD.O2 into air
【小题5】The picture tells us         .
A.how trees let O2 go into air in the sunlight
B.how trees let CO2 go into air in the sunlight
C.the sunlight isn't important to trees at all
D.trees can take in O2 and let out CO2

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综合填空。
     Do you know Eskimoes? Let me tell you something about their life. The
Eskimoes live near the North Pole. There are only two seasons there:
winter and summer. There is no spring o_______(1) autumn there. In
winter night are long. You can't see the s_______(2) for more than two
months, even at noon. In summer days are long. For more than two months,
the sun never g__________(3) down and there is no night.
     The Eskimoes have w________(4) clothes. Their clothes are made of
the skin of animals. From animals they make coats, caps and s_________(5).
Near the North Pole trees can't g_________(6), for it is too cold there.
The Eskimoes h_______(7) to make their houses from skins, stones or snow.
When they g_________(8) out in a storm and can't get back home, they make
houses of snow. They l__________(9) these snow houses when the storm is
over. Life is hard for the Eskimoes, but they still l________(10) to live there.

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小题1:Trees can get light from       in the daytime.
A.C02B.O2C.the sunD.the moon
小题2:Chlorophyll is in         .
A.sunlightB.soilC.airD.leaves
小题3:We can get more O­2 by         .
A.planting more trees
B.cutting trees down
C.making the water in soil(土壤) polluted
D.making more CO2
小题4:CO2 from air and      can produce food  for trees with the help of chlorophyll and sunlight.
A.water in the seaB.water from soil
C.water in the riverD.O2 into air
小题5:The picture tells us         .
A.how trees let O2 go into air in the sunlight
B.how trees let CO2 go into air in the sunlight
C.the sunlight isn't important to trees at all
D.trees can take in O2 and let out CO2

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  1. 1.

    Trees can get light from       in the daytime

    1. A.
      CO2
    2. B.
      O2
    3. C.
      the sun
    4. D.
      the moon
  2. 2.

    Chlorophyll is in         .

    1. A.
      sunlight
    2. B.
      soil
    3. C.
      air
    4. D.
      leaves
  3. 3.

    We can get more O?2 by         .

    1. A.
      planting more trees
    2. B.
      cutting trees down
    3. C.
      making the water in soil(土壤) polluted
    4. D.
      making more CO2
  4. 4.

    CO2 from air and      can produce food  for trees with the help of chlorophyll and sunlight

    1. A.
      water in the sea
    2. B.
      water from soil
    3. C.
      water in the river
    4. D.
      O2 into air
  5. 5.

    The picture tells us         .

    1. A.
      how trees let O2 go into air in the sunlight
    2. B.
      how trees let CO2 go into air in the sunlight
    3. C.
      the sunlight isn't important to trees at all
    4. D.
      trees can take in O2 and let out CO2

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根据提示填空:人们砍树,烧树使温室效应更严重,因为树吸收有害气体。大量砍树也导
致洪水,因为树帮助稳固土壤,下雨时土壤吸收水分。
The burning and cutting down of trees is making the greenhouse effect(66)_________because trees take in(67)_________gases.It will also cause(68)_________because trees can help(69)_________soil together,and soil(70)_________water when it rains.

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