问题描述：
As I was walking home，a boy seemed to be singing a song in a very low voice，walking in front of me and carrying some of the same high school books I had with me.I caught up to him，and said “Hello”．I could tell he was startled，and dropped one of his books.I picked it up and as I handed it to him，he said “Thank you.”in a strange way，like with a strong accent.
We soon began walking together and talking.It turned out he was in my science class，and I didn’t even know it!
His name was Ahmad，and his family had just moved here this school year.He invited me into his house，and his family treated me like a special guest，which made me feel very welcome.He said hospitality (好客) was very basic to his culture，and strangers were always treated very kindly.His mom brought out some great food，and offered me some tea.Ahmad’s father and two sisters wanted to hear all about me and my family，and my schooling.
Ahmad’s whole family had to leave their lifelong home because war had broken out，and it wasn’t safe there anymore.They left with only what they could carry.His family was happy to feel safe，and they got used to American culture quickly.They seemed pleased that Ahmad had brought a friend home to meet them.
And as my friendship with Ahmad has continued，I now realize that the world is so much bigger than I thought! I also realize that your friends don’t have to be just like you.Differences make the world go round.
最佳答案：
21．What does the underlined word “startled”in Paragraph 1 mean?
A．Excited. B．Moved.
C．Surprised. D．Interested.
答案 C
解析 词义猜测题。根据画线词后的“and dropped one of his books”及“in a strange way，like with a strong accent”可知，这个男孩不认识作者，对作者的突然问候感到吃惊，以至于掉了一本书。故选C项。
22．Why was the writer treated like a special guest by Ahmad’s family?
A．They liked strangers who came to their home for help.
B．They wanted to know more information about the writer.
C．Strangers were always treated very kindly in their culture.
D．The writer was an American and knew much about their culture.
答案 C
解析 细节理解题。根据第三段第三句可知，在艾哈迈德他们的文化中，殷勤好客是一种基本的礼节，他们总是善待陌生人。故选C项。
23．Where does the writer probably come from?
A．Canada. B．America.
C．China. D．Australia.
答案 B
解析 推理判断题。根据第四段第三句中的“and they got used to American culture quickly”可知，这家人很快适应了美国文化，由此可以推断出作者可能是来自美国。故选B项。
24．What can we learn from the passage?
A．People from different countries can be good friends.
B．Friends need different cultures and different accents.
C．Your friends should have a lot of things the same with you.
D．You can’t make friends with people from other countries.
答案 A
解析 推理判断题。通读全文可知，作者与来自另外一个国家的男孩艾哈迈德在路上偶遇，尽管他们之间有着很大的文化差异，但最终他们成了很好的朋友。由此可以推断A项正确。