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    When comes to research into heart disease and the effects on the body, we do not have adequate substitutes for the use of animals. A. that B. it C. what D. this 25 . with a gradual rise of seawater, some nations in the Pacific are considering moving in the near future. A. Facing B. To face C. Faced D. Being faced 【查看更多】

     

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    When ____ comes to research into heart disease and the effects on the body, we do not have adequate substitutes for the use of animals.

    A．that　　　　　 B．it　　　　　 C．what　　　　 D．this

     

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    When ____ comes to research into heart disease and the effects on the body, we do not have
    adequate substitutes for the use of animals.
    [      ]
    A. that
    B. it
    C. what
    D. this

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    When ____ comes to research into heart disease and the effects on the body,we do not have adequate substitutes for the use of animals.

    A. that　 B. it　　 C. what　　　　　 D. this

     

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    When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.

       A. that          B. it                   C. this             D. what

     

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    When ______ comes to research into heart disease and its effects on the body, we do not have adequate substitutes for the use of animals.


    1. A.
      it
    2. B.
      this
    3. C.
      that
    4. D.
      which

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