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举一反三
【多选题】The preparation outline should have a consistent pattern of symbolization and indentation(行首空格).
A.
In the most common system of outlining, main points are identified by roman numerals and are indented equally.
B.
Sub-points are identified with capital letters and are indented equally.
C.
There may also be sub-subpoints and even sub-sub-subpoints.
D.
Using a consistent pattern of symbolization and indentation provides a clear visual framework that shows the relationships among the ideas in the speech.