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    It is difficult to do some of the experiments in our physics textbooks. A. to describe B. describing C. described D. being described 【查看更多】

     

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    26. It is difficult to do some of the experiments ________ in our physics textbooks.

    A. to describe     B. describing        C. described         D. being described

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    26. It is difficult to do some of the experiments ________ in our physics textbooks.

    A．to describeB．describingC．describedD．being described

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