Afterhisuncledied，theyoungman_____thebeautifulestatewithwhichhechangedfromapoormantoawealthynoble．
A、inhabitedIn 1991，while t11e economies of industrialized countries met an economic_____，the economies of developing countries were growing very fast ．
In1991，whilet11eeconomiesofindustrializedcountriesmetaneconomic_____，theeconomiesofdevelopingcountriesweregrowingveryfast．
设数列 {an} 的前 n 项和为 Sn，则 {an} 等差。
(1) S n4=n 2+2n, n=1,2,3
(2) S n4=n 2+ 2n +1,n=1,2,3
Itisestimatedthat，currently,about50，000speciesbecome_____everyyear．
TheopportunitytoexploreandplayandtheencouragementtodosoCan________theperformanceofmanychildren．
