49. What do we learn about social customs in Arabian countries?
- A. Men can show friendship in public through physical affection.
- B. Non-traditional romantic relationships are simply unacceptable.
- C. Physical contact between unfamiliar people is negatively perceived.
- D. People of different ages and genders show affection in different ways.
答案：A
答案句：In contrast, in certain Arabian, African, and Asian countries, men can publicly hold hands or show physical affection as signs of brotherhood or friendship while these behaviors may suggest a romantic relationship in other parts of the world.
参考译文：相比之下，在某些阿拉伯、非洲和亚洲国家，男性可以公开牵手或表达身体情感，作为兄弟情谊或友谊的标志，而这些行为在世界其他地方可能暗示恋爱关系。
定位线索：题干“Arabian countries”→答案句取自第6段“in certain Arabian, African, and Asian countries”；文中“men can publicly hold hands or show physical affection as signs of brotherhood or friendship”对应选项A“men can show friendship in public through physical affection”。
解析：题干问关于阿拉伯国家的社会习俗我们了解到什么。答案句明确指出男性可以公开牵手或表达身体情感作为友谊的标志，选项A“men can show friendship in public through physical affection”正是对原文的直接对应。选项B“非传统恋爱关系不可接受”在原文中未提及，属于无中生有；选项C“不熟悉的人之间的身体接触被负面看待”在原文中说的是“opposite sexes who are not family members”，范围扩大；选项D“不同年龄和性别的人以不同方式表达情感”在原文中未提及，属于无中生有。