_________(64)A.portion B.fractionC.proportion D.p

△＋＋=44 △＋△＋△＋＋=64 那么=_______，△=_______。

_________(64)A.portion B.percentageC.proportion D

_________(58)A.suggestion B.commitmentsC.ways D.p

_________(64)A.portion B.percentageC.proportion D

_________(57)A.teacher B.instructorC.lecturer D.p

_________(54)A.terrible B.possibleC.enjoyable D.p