[解析]
(1)细节理解题。根据第二个小标题I've Come to Clean Your Shoes by Madge Harrah《我来擦你的鞋》的段落The morning of a family funeral,an acquaintance shows up unannounced and says, "I've come to clean your shoes." He spends the day quietly shining every pair in the house.The writer ends with: "Now,whenever I hear of an acquaintance who has lost a loved one,I try to think of one specific task suiting that person's need.And if the person says, 'How did you know I needed that done?'I reply, 'it's because a man once cleaned my shoes."(一个家庭葬礼的早晨,一个熟人突然出现,说:"我是来给你擦鞋的。"他整天安静地把屋子里的每一双鞋都擦得锃亮。作者最后写道:"现在,每当我听说一个熟人失去了心爱的人,我就会试着去想一个适合那个人需要的具体任务。如果这个人说,'你怎么知道我需要做这件事?'我回答说:'那是因为曾经有个人给我擦过鞋。'")可知,这位熟人通过做"擦鞋"这种做力所能及的事情来表达对已经失去亲人的朋友的关心。故选A。
(2)细节理解题。根据第三个小标题Strange Encounter on Coho Creek by Morris Homer Erwin《Coho Creek上的奇异遭遇》的段落中When we shared this classic on rd.com in 2019,it went viral and it has now been read by many millions online and in print.(2019年,当我们在rd.com上分享这部经典作品时,它迅速传播开来,现在已经有数百万人在网上和印刷品上阅读)可知,这个故事在网上被疯狂转发,非常受欢迎。故选C。
(3)文章出处题。根据第一段By our very rough calculations,Reader's Digest has published some 35.000 articles in nearly 1,200 issues.These small pages have held some very big names,including U.S.presidents,world leaders,sports legends,and,indeed,the biggest contributors of all,everyday Americans with a story to tell.These are some of our proudest moments.(根据我们的粗略计算,《读者文摘》在近1200期刊物上发表了大约3.5万篇文章。这些小小的版面上刊登了一些大人物,包括美国总统、世界领导人、体育传奇人物,事实上,还有最重要的贡献者,每天都有故事要讲的美国人。这是我们最自豪的时刻。)可知,这篇文章是《读者文摘》杂志上的一些代表性文章。故选B。