高考英语.Canadaisacountrymanydifferentnationalitiesaswellasonewith.
34.Canadaisacountrymanydifferentnationalitiesaswellasonewithforeignimmigrantsthemajorityofitspopulation.
A.makingupof;occupiedwithB.consistingof;makingup
C.madeupof;consistsofD.consistedof;takingup
选B的理由是什么,A为什么不行?