*Canadian Trade Deficit Narrows To C$1.0 Billion In April

*U.S. Trade Deficit Widens To $74.6 Billion In April

Gold Futures Slightly Higher As Investors Await Key Data After ECB Cuts Rate

*U.S. Labor Productivity Edges Up By Downwardly Revised 0.2% In Q1

*U.S. Initial Jobless Claims Rise To 229,000 In Week Ended 6/1