May 21 (Reuters) - Canada's main stock index opened

higher on Tuesday, as investors cheered slowdown in country's

annual inflation rate to a three-year low that boosted bets for

a June interest rate cut, while the energy shares fell tracking

lower crude prices.

At 9:35 a.m. ET (13:35 GMT), the Toronto Stock Exchange's

S&P/TSX composite index was up 11.42 points, or 0.05%,

at 22,476.79.