东北大学秋学期大学英语三在线作业答案.doc

15秋学期《大学英语(三)》在线作业2

阅读理解单选题完型填空
一、阅读理解(共 4 道试题,共 40 分。)
1.
Lor fore is efine s eing the totl numer of people who re ville to work n ern inome. This efinition inlues everyone who is employe or seeking pi employment, so it inlues employees n the self-employe. Lor is one of the ountry’s resoures whih n e omine with other resoures to proue the goos n servies require y the ommunity.
Though the size of the workfore relies on the size of the totl popultion, there re severl other spets whih lso ffet it. The ge istriution of the totl popultion hs very mrke effet on the ville workfore. If the popultion hs high proportion of very young people or of those too ol to work, then the ville workfore woul e lower thn if there were n evenly spre ge istriution. If the popultion grows rpily from nturl inrese, . the numer of irths gretly exees the numer of eths, then s totl popultion inreses the proportion in the workfore elines.
Sometimes popultion is esrie s ging, whih mens the irth rte is either flling or growing very slowly, n s people retire from the workfore there re inequte numers of young people entering it to tke the ple of those who re leving it. The popultion is top-hevy with oler people. So the perentge of the popultion in the workfore elines when there is either rpi inrese in irths or flling irth rte.
The ge istriution of popultion hs severl importnt influenes on the eonom