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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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