*China Jan-April Fixed-Asset Investment +30.5% on Year

*Greenback climbs to 4-day high of 1.168 against Canadian dollar

*Aussie slips to 6-day low of 1.7945 against euro, 5-day low of 73.5 against yen and 4-day low of 0.7564 against dollar

*Japanese yen jumps to 6-day high of 83.22 against Canadian dollar

*Yen rises to 5-day high of 131.80 against euro and 4-day high of 87.51 against franc