A FRENCH TRUCK driver on the Paris-Dakar rally was shot and killed by an unidentified gunman Friday, forcing the organizers to halt the desert motor race in Mali. . . . THE WORLD BANK announced $168.4 million in loans on Friday to improve living conditions in three Chinese cities. . . . OLD MASTER PAINTINGS collected by Ferdinand and Imelda Marcos during their years of power in the Philippines sold for more than $15 million Friday at Christie's in New York City.