系统解析:细节题:第一段的The enthusiasm which greeted the Diamond Jubilee was, of course, especially memorable for me and my family.和第二段的witness the strength of fellowship and friendship可知提到A项,从第六段的句子:We were reminded, too, that the success of these great festivals depended to an enormous degree upon the dedication and effort of an army of volunteers.可知B提到了,第七段的句子:But for others, service will come first. Those serving in our armed forces, in our emergency services and in our hospitals, whose sense of duty takes them away from family and friends, will be missing those they love.可知C是提到了,文章没有提到D项。