premise: The dollar rebounded from 20-month lows against the euro Monday afternoon as investors bought back the US currency following its recent losses, dealers said.
  The euro fell to 1.3316 dollars from 1.3337 in New York Friday when it charted its highest levels since March 2005.
  The dollar rose to 115.72 yen from 115.43 yen. The euro slipped to 153.89 yen from an all-time high of 154.11 in New York.
  The dollar had taken another beating in the morning after Friday's surprisingly weak US manufacturing data further jolted confidence in the world's largest economy.
   What made the dollar take another beating in the morning?
hypothesis: investors bought back the US currency