Americans have four primary avenues for making friends: at work, at school, through a hobby or a (1) such as volunteer work and discussion group, or through a family or (2) .
In American culture, a job is more than the work that one performs between the hours of 9 a.m. and (3) . Work becomes a major socializing influence. Many young mothers who (4) their jobs to care for small children remark on the loneliness of their new lifestyles because they have lost their forum for (5) .
A great number of American employers recognize business social (6) and use it to build a family atmosphere on the job so that employees will feel (7) in their work environment. Some employers arrange company get-togethers in their home or at a (8) . American companies have at least one (9) annually, usually at Christmas time. Many corporations have (10) where employees and administrators alike dress (11) to play games such as baseball and volleyball.
Top American administrators often hold social gatherings (12) . Depending upon the size of the employer’s home and the number of (13) . These social gatherings may be picnics, pool parties, or (14) . If the company is large, an employer may hold what Americans call (15) . For an open house, the employer will invite his employees to come to his home (16) between 1 p.m. on a certain day. Those invited usually stay for (17) , chatting with the other guests and their host. People come and go (18) during the designated hours, and the host keeps refreshments, usually (19) or hors d’oeuvres and beverages, available for all who come. For such social gatherings, it is considered (20) the invitation unless you have an excellent reason.

下面是——组有关我国农业、农村经济发展内容的材料：
材料1
投资、消费和出口，是拉动经济增长的“三套马车”。1997年我国经济增长8.8％，从拉动因素上看，投资约占2.2个百分点，消费约占4.9个百分点，净出口约占1.7个百分点。由于受亚洲金融危机的影响，1998年我国出口增长明显下降，1999年出口形势依然极为严峻。
——摘自1999年1月13日《经济日报》
材料2
我国12亿人口，9亿多在农村。1997年，9亿多农民消费水平还不及3亿城镇居民的消费水平。据有关专家分析，我国农民若要达到1995年城镇居民的消费水平，约需增加彩电1.6亿台、电冰箱1.4亿台、洗衣机1.7亿台，相当于我国目前彩电生产能力的2.8倍、电冰箱生产能力的7.2倍、洗衣机生产能力的6.8倍。
——摘自1998年度《中国统计年鉴》
材料3
从1978年到1984年，农民人均纯收入由134元提高到355元，年均实际增长15.1％，这是第一个收入增长较快的时期。这期间，农村市场繁荣，购销两旺；从1985年到1991年，农民收入增长减缓，年均实际增长仅0.7％，这严重制约了农村市场的开发；从1992年到1996年，农民收入出现了第二个增长较快的时期，农村市场出现了新的繁荣；1997年以来，农民收入增长又出现了减缓，由此带来了农民购买欲望不高，农村市场疲软。
材料4
尽管近年来农业连续丰收，但农民收入增幅却反而下降，城乡居民收入差距再度扩大，因此，农村消费品零售额占社会消费品零售额的比重呈逐年下降趋势，由1996年的46.4％降到1997年43. 3％。近年来国民经济中出现的工业品需求不旺、积压严重，与农民收入增长缓慢、农村市场份额下降关系很大。
材料5
面对当前亚洲金融危机的冲击和经济全球化的挑战，进一步加强农业、繁荣农村经济、提高农民购买力，有利于扩大内需、保持整个国民经济增长的良好势头，增加我国在国际合作与竞争中的回旋余地。在充分利用国外市场的同时，努力开拓国内市场特别是农村市场，是我国经济发展的基本立足点。请回答：
(1)材料1和材料2各反映什么经济现象和观点它们之间有何内在联系
(2)材料3、4反映了什么经济问题怎样解决
(3)联系材料1、2、3、4运用唯物辩证法的有关原理分析材料5。