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    The first use of atomic weapons was in 1945, and their power increased enormously ever since. A. is B. was C. has been D. had been 【查看更多】

     

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    The first use of atomic weapons was in 1945, and their power________ increased enormously ever since.


    1. A.
      is
    2. B.
      was
    3. C.
      has been
    4. D.
      had been

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    The first use of atomic weapons was in 1945, and their power ____increased enormously ever since.

    A. is   B. was  C. has been  D. had been.

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    The first use of atomic weapons was in 1945, and their power ________ increased enormously ever since.

    A. is             B. was   C. has been        D. had been

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    The first use of atomic weapons was in 1945.And their power _______ increased enormously ever since.

    A. is B. was?

    C. has been D. had been?

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    The first use of atomic weapons was in 1945, and their power _____ increased enormously ever since.

    [     ]

    A. is
    B. was
    C. has been
    D. had been

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