短文改错.每句里最多有两处错误句、错误涉及一个单词的增加、删除或修改,

短文改错.每句里最多有两处错误句、错误涉及一个单词的增加、删除或修改,
new studies show the average age of american farmers is slowly risen,while fewer young americans are deciding to enter farming than in past.and the number of farmers and working farms in the united states have decreased over time.the report also says farmers generally are older than another american workers for several reason.farmers can continue to working on their farms long before most wage eamers have retired .americans can expect to live longer than before .this meant many farmers won't atop working until they are very old .however ,fewer young americans are becoming farmers .the percentage of faemers older than 35 has dropped great from 15% in 1954 to 8%.