KR 16 is one of the most versatile ____can be expanded easily and is available in various combinations.
                    举一反三
- Outlines can be derived most easily from __________.
 - No one definition can satisfactorily embrace all the various kinds of stories that can legitimately be classed as mythology on the basis of one criterion or another.
 - Fuel cells are versatile as they can scale up easily and meet a variety of power needs – large or small. You can ____ individual fuel cells to increase the amount of power they can provide. The taller the stack, the more power you have.
 - The body of a while loop can contain at most one "break" statement and at most one "pass" statement.
 - The technique of “_________” your readers what you mean is one of the most powerful ones available to you.
 
