pAssAgE two quEstions 29 to 31 ArE BAsED on thE pAssAgE you hAvE just hEArD、 A.BECAusE EConomiCs is As irrEgulAr As wEAthEr. B、BECAusE EConomiCs is As importAnt As wEAthEr to our DAily liFE. C.BECAusE EConomiCs ConDition CAn BE juDgED ACCorDing to wEAthEr. D.BECAusE it is not EAsy to prEDiCt thE FuturE ConDition oF EConomiCs.