*Euro climbs to 2-day high of 0.8510 against British pound

*Swiss June ZEW economic expectations at 9.7, in positive territory for first time since Sept. 2006

*Eurozone April Exports Down 1.3% On Month, Imports Fall 2.7%

*Eurozone April Construction Output Down 4.7% On Year

Euro higher against majors amid Eurozone trade balance and construction output reports