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四级练习2011.10.09(2)


       
       




The floor of the ocean contains many riches that can be used by human beings.Oil and some chemicals and minerals are already taken from the sea.(1)_______________________.Food grown in the sea could help solve the problem of many of the world's people who go hungry every day.About ten to fifteen percent of the world's people do not have enough food.Some scientists believe that some day the sea will be used to make electric power.This would help meet the need for more power for world's industries.(2)_______________________.



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(1)By using unclear enerrgy,ocean wather can be turned into flesh wather ....could from farm  .....under the sea is possiblity in the future .
(2)The decreasing of supply coal , oil and gas ...shows the need to find a new kind f power is urgent.
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  • Rebecca949

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回复 3# 穆穆0327


    可以重复听的,你也可以拉动进度条选择要听的部分

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听力都只能听一次么

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1)By using unclear energy,ocean water,come be into fresh water,fellow moving to the salt,could you think food from...under the sea is a possibility in the future
2)The decrease pride of cold oil and gas-ring,shows the need to find new kinds of power is urgent
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