47. Why do people post comments selectively on social media?
- A. They do not find all their online friends trustworthy.
- B. They want to avoid offending any of their audience.
- C. They do not want to lose their followers.
- D. They are eager to boost their popularity.
答案：A
答案句：Generally speaking, there are no unfiltered comments or casually taken photos on our social media pages. And, rightfully so, because it wouldn't feel safe to be completely authentic and vulnerable with some of our “ friends ” whom we don't actually know or with whom trust has yet to be built.
参考译文：一般来说，我们的社交媒体页面上没有未经筛选的评论或随意拍摄的照片。而且，这样也是合理的，因为与我们实际上不认识或尚未建立信任的一些“朋友”完全真实和脆弱地相处会让人感到不安全。
定位线索：题干“Why do people post comments selectively on social media?”→答案句取自第3段；文中“it wouldn't feel safe to be completely authentic and vulnerable with some of our 'friends' whom we don't actually know or with whom trust has yet to be built”对应选项A“They do not find all their online friends trustworthy”（不信任所有网友）。
解析：题干问人们为什么在社交媒体上选择性发帖。答案句明确说因为与不认识或未建立信任的“朋友”完全真实会感到不安全，即不信任这些网友，这与选项A“They do not find all their online friends trustworthy”直接对应。选项B“避免冒犯观众”、C“不想失去粉丝”、D“渴望提升人气”在原文中均未提及，属于无中生有。
48. What are humans inclined to do according to the passage?
- A. Exaggerate their life's accomplishments.
- B. Strive for perfection regardless of the cost.
- C. Paint a rosy picture of other people's lives.
- D. Learn lessons from other people's downfalls.
答案：C
答案句：Also, we tend to idealize others' lives and compare our downfalls to their greatest accomplishments, ending in feelings of loneliness and inadequacy.
参考译文：而且，我们倾向于美化他人的生活，并将自己的失败与他们的最大成就相比较，最终导致孤独感和不足感。
定位线索：题干“What are humans inclined to do according to the passage?”→答案句取自第5段；文中“idealize others' lives”对应选项C“Paint a rosy picture of other people's lives”（美化他人的生活）。
解析：题干问人类倾向于做什么。答案句直接说我们倾向于美化他人的生活，这与选项C“Paint a rosy picture of other people's lives”（描绘他人生活的美好图景）是同义转述。选项A“夸大自己的成就”与原文相反，原文是比较自己的失败与他人的成就；选项B“不惜代价追求完美”是第6段提到的内容，但题干问的是人类普遍倾向，且原文未说“不惜代价”；选项D“从他人失败中吸取教训”无中生有。