C
根据短文内容，从题中所给的A、B、C、D四个选项中选出一个最佳选项。
Born as the only child of my parents, I am the "king" in the family. My parents are both busy with business and they come home every two weeks. Because they don't spend much time with me, they always feel guilty. So they buy me many expensive things and let me do whatever I want. My grandparents never let me do any chores because they want me to do my schoolwork.
I never said "thank you" to people. As time went by, I found that my classmates didn't like me and my best friends left me.
I noticed that all the popular kids in the class were friendly to others. They always smiled and said "thank you" to others. They did whatever
they could to help when others were in trouble. Other kids liked them and always played with them. "I need to change! I will get my friends back," I said to myself. From then on, I started to change myself. I learnt to say "thank you" to others. I smiled and helped others as much as I could. Gradually, I found that other kids liked to talk with me and they would ask me to play with them. My friends came back to me again.
Now I have more friends and I am happier than I used to be.
21. What does the underlined word "guilty" in paragraph 1 mean? ()
A. Sorry.
B. Worried.
C. Sad.
D. Relaxed.
22. What's the writer's life like at home? ()
A. His parents spend much time with him.
B. He has to do lots of housework.
C. He can do what he wants to do.
D. He does much more homework than other kids.
23. According to the text, what kind of people is more popular at school? ()
A. Those who always buy expensive things.
B. Those who don't talk too much.
C. Those who always change.
D. Those who are polite to others.
24. What did the writer do to change himself? ()
A. He learnt to say "thank you".
B. He always smiled at others.
C. He helped others as much as he could.
D. All of the above.
25. What can we infer from the text? ()
A. To make more friends, you need to try to please them.
B. A person who always receives but never gives can still have many friends.
C. The writer lost his friends at first because he didn't like them.
D. To be a nicer and better person, we need to make some changes.

21.A 22.C 23.D 24.D 25.D

【分析】
本题为英语阅读理解题，包含词义猜测题、细节理解题、推理判断题三类题型。解题思路：1. 词义猜测题需定位划线词所在语境，结合上下文逻辑推断词义；2. 细节理解题需根据题干关键词定位原文对应内容，对比选项得出答案；3. 推理判断题需基于原文信息合理推导，不可主观臆断。
【解析】
21题：词义猜测题。定位第一段“my parents are both busy with business and they come home every two weeks. Because they don't spend much time with me, they always feel guilty.”，父母因陪伴时间少产生的情绪，“guilty”意为“愧疚的、抱歉的”，对应选项A。
22题：细节理解题。定位第一段“So they buy me many expensive things and let me do whatever I want.”，可知作者在家可做任何想做的事，对应选项C。
23题：细节理解题。定位第三段“I noticed that all the popular kids in the class were friendly to others. They always smiled and said 'thank you' to others.”，可知受欢迎的人对他人有礼貌，对应选项D。
24题：细节理解题。定位第三段“I learnt to say 'thank you' to others. I smiled and helped others as much as I could.”，A、B、C均为作者改变的做法，对应选项D。
25题：推理判断题。作者因改变从不受欢迎到受欢迎，可推断出“要成为更好的人需做出改变”，对应选项D。
【答案】
21.A 22.C 23.D 24.D 25.D
【知识点】
英语阅读理解、词义猜测、细节理解
【点评】
本文通过作者的成长经历考查英语阅读核心题型，注重阅读技巧的运用，整体难度适中，适合巩固基础阅读能力。
【难度系数】
0.7