Once harm ______ to the environment, it takes years to have the system recovered.

A.doesB.is doneC.will be done D.be done

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科目:高中英語 來源:20102011年浙江省溫州市十校聯(lián)考高一下期末考試英語試題 題型:單項填空

Once harm is _______ to the eco-system, all species will ________, including man himself.

A. made; be in danger                  B. done; be dangerous  

C. caused; be endangered               D. done; be in danger

 

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科目:高中英語 來源: 題型:

Once harm ______ to the environment, it takes years to have the system recovered.

A. does      B. is done  C. will be done    D. be done

 

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科目:高中英語 來源: 題型:

Once harm ______ to the environment, it takes years to have the system recovered.

A. does    B. is done  C. will be done    D. be done

 

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科目:高中英語 來源: 題型:

Once harm ______ to the environment, it takes years to have the system recovered.

A. does                 B. is done                C. will be done         D. be done

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