ST. LOUIS—Kyle Lohse worked seven strong innings and the St. Louis Cardinals’ slumbering offense ended Ryan Dempster’s 33-inning scoreless streak with a three-run first in a 4-1 victory over the Cubs on Friday night.Matt Holliday added a third-inning home run estimated at 469 feet, the longest at 7-year-old Busch Stadium.Lohse (10-2) won his fourth straight decision over five starts to complement a lineup that topped three runs for the first time in 12 games.The defending World Series champions found an unlikely victim in Dempster (5-4), who hadn’t allowed a run since May 30 while winning five straight starts. He entered with a major league-best 1.86 ERA before running into immediate trouble, giving up four straight singles in a span of six pitches with one out. Rumors of a Dempster trade to the Dodgers continue,but so far,he remains a Cub