1 June 2007 LSAT: A complete sample test.  LSAT en espaÃ±ol: A new edition of the free LSAT en espaÃ±ol sample PrepTest will be available this summer, in time to prepare for the Spanish LSAT administration to be held later this year.
Over the years these two companies transformed into Exxon and Mobil, respectively. In 1999 Exxon and Mobil officially merged to create the largest company in world at that time â ExxonMobil. With a 2013 revenue of $420 billion, this oil and gas company is one of the biggest.
Chevron is the second-largest oil company in the country, and the third-biggest company overall in terms of revenue. It has been building its gas reserves recently, most notably with the purchase of Atlas Energy, an active shale gas driller. Still, more than 60 percent of the company's worldwide reserves are in oil.