53. What is said about the fourth stack of the ships?
- A. It was a mere piece of decoration.
- B. It was the work of a famous artist.
- C. It was designed to let out extra smoke.
- D. It was easily identifiable from afar.
答案：A
答案句：Most recognizable of the ship designs are the ship's smoke stacks, but the fourth stack was actually just artistic in nature and served no functional purpose.
参考译文：船舶设计中最显眼的是烟囱，但第四个烟囱实际上只是艺术性的，没有任何功能用途。
定位线索：题干“fourth stack”→答案句“the fourth stack”；文中“just artistic in nature and served no functional purpose”对应选项A“a mere piece of decoration”。
解析：题干问第四个烟囱的情况，答案句直接说明它“just artistic in nature and served no functional purpose”，即纯粹装饰，对应选项A“a mere piece of decoration”。选项B“work of a famous artist”曲解“artistic”，原文指艺术性而非艺术家作品；选项C“let out extra smoke”与“served no functional purpose”矛盾；选项D“easily identifiable”虽提及“Most recognizable”但那是针对所有烟囱，且非题干所问核心。
55. What happened to the ship Olympic in the end?
- A. She was used to carry troops.
- B. She was sunk in World War I.
- C. She was converted into a hospital ship.
- D. She was retired after her naval service.
答案：D
答案句：Eventually, she was taken out of service in 1935, ending the era of the luxurious Olympic class ocean liners.
参考译文：最终，她于1935年退役，结束了豪华奥林匹克级远洋邮轮的时代。
定位线索：题干“in the end”→答案句“Eventually”；文中“taken out of service”对应选项D“retired”。
解析：题干问奥林匹克号最终结局，答案句说“she was taken out of service in 1935”，即退役，对应选项D“retired after her naval service”。选项A“used to carry troops”和C“converted into a hospital ship”是服役期间的事，非最终结局；选项B“sunk in World War I”与原文“survive”矛盾，且未提及沉没。