Rapid application development (RAD) systems purport to lighten the developer’s (46) by making it easy to program an application with simple intuitive steps.
RAD tools (47) the developer everything needed to construct a fully functional application quickly and easily. They make short work of modifying the developed product to (48) changes after the program is finished. Applications developed with RAD tools are constructed as they are envisioned. As an application’s real usefulness (49) , the developer armed with RAD tools should be able to (50) on new features with little fuss.

A. accommodate B. accountC. decrease D. eliminate

材料1：目前在我国存在8500多万文盲、3000多万农村贫困人口、2000多万城市贫困人口„„他们是弱势群体的主体。关注弱势群体，建立健全社会保障体系，是党和政府为解决弱势群体问题而采取的一项有力措施，也是学习实践“三个代表”、坚持执政为民的重要体现。材料2：十六届三中全会强调，要加快建设与经济发展水平相适应的社会保障体系，全方位拓展救助渠道，包括政府与非政府组织、营利与非营利机构密切合作；个人、家庭、企业、社区和政府共同分担等形式，多渠道筹集和积累社会保障基金，形成多层次、多形式的社会保障格局。建立健全同经济发展水平相适应的社会保障体系，各地要根据实际情况合理确定社会保障的标准和水平，有条件的地方，探索建立农村养老、医疗保险和最低生活保障制度，切实救助社会弱势群体。

上述材料中我国解决“弱势群体”问题的措施是如何体现辩证法观点的？