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    Question

    What is a top-down parser?

    A Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents until individual preterminal symbols are written Correct Answer Incorrect Answer
    B Begins by hypothesizing a sentence (the symbol S) and successively predicting upper level constituents until individual preterminal symbols are written Correct Answer Incorrect Answer
    C Begins by hypothesizing lower level constituents and successively predicting a sentence (the symbol S) Correct Answer Incorrect Answer
    D Begins by hypothesizing upper level constituents and successively predicting a sentence (the symbol S) Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Begins by hypothesizing a sentence (the symbol S) and successively predicting lower level constituents  until individual preterminal symbols are written

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