Dollar catches breath ahead of Powell testimony;  attempts recovery ,REP,CEN,ECO,FRX,INFL,INT,MCE,MPLT,PLCY,UK,GB,WEU,EASIA,AMERS,US,EUROP,CA,AU,NAMER,ASXPAC,NZ,EMRG,AUNZ,EZ,CN,ASIA,JP,TOPNWS,FIN @ReutersBiz https://t.co/7JUJBUEka3 https://t.co/CLpka2RyC8