Crude oil futures rise, today, underpinned by expectations of a revival in demand growth in the United States, the world's biggest oil consumer, while Europe's debt worries capped gains.Investors were also keeping an eye on Cyprus, where banks reopened today after two weeks. So Brent crude rose 17 cents, to 109.86 dollars a barrel. U.S. oil, also known as WTI crude, rose 16 cents, to 96.74 dollars a barrel, after ending higher for four straight days.