Wall Street jumps on China bets and commodities
* New York crude oil futures closed up 9 percent.
* The Dow Jones industrial average gained 149.82 points, or 2.23 percent, to end unofficially at 6,875.84. The Standard & Poor's 500 Index added 16.54 points, or 2.38 percent, to 712.87. The Nasdaq Composite Index rose 32.73 points, or 2.48 percent, to 1,353.74.
(Reporting by Rodrigo Campos; Editing by Jan Paschal)