BBBBBBBBBBBBBBB
Use negation method to find necessary assumption.
If you negate B, you have "The scheduled highway projects identified as wasteful in the report were mostly projects in districts controlled by the President’s party." If this is true, and since we know that 90 percent of the projects canceled were in legislative districts controlled by opposition party, then we have problem - clearly politics is involved in the cancellation.
-- by 会员 sdcar2010 (2011/1/31 9:17:41)