Hiswifehasbeen_______alotofpressureonhimtochangehisjob.
A、takingWeaimtoensurethatallcandidatesaretreatedfairlyandthattheyhaveequal______toemploymentopportunities．
Themanageriscallingona______customertryingtotalkhimintosigningthecontract．
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
The poor countries are extremely _______to international economic fluctuations
Itisestimatedthat，currently,about50，000speciesbecome_____everyyear．
