(1/2)按规律填空:[1]1,-2,3,-4,( ),( ),( ) [2]-23,-18,-13,( ),( ),( ) [3]1

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(1/2)按规律填空:[1]1,-2,3,-4,( ),( ),( ) [2]-23,-18,-13,( ),( ),( ) [3]1
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(1/2)按规律填空:[1]1,-2,3,-4,( ),( ),( ) [2]-23,-18,-13,( ),( ),( ) [3]1
(1/2)按规律填空:[1]1,-2,3,-4,( ),( ),( ) [2]-23,-18,-13,( ),( ),( ) [3]1

(1/2)按规律填空:[1]1,-2,3,-4,( ),( ),( ) [2]-23,-18,-13,( ),( ),( ) [3]1
:[1]1,-2,3,-4,(5 ),( -6),(7 )
[2]-23,-18,-13,(-8 ),(-3 ),(2 )