In busy subway (地铁) stations in Xi’an, China, many volunteers wear small red cards on their backpacks (背包). The cards say, “If you need help, just tap me.” Zhao Chen, a 40-year-old volunteer, came up with this warm idea. He wants to help elderly people and make cities more friendly to them.

Zhao Chen got this idea from his own experience. In 2014, his mother came to the city to help him take care of his newborn baby. She was not familiar with the city and got lost. Zhao could not get in touch with her at that time. Luckily, a college student noticed his mother’s problem and helped her find the way. This small act of kindness touched Zhao deeply. After that, he decided to help elderly strangers in need.

At first, Zhao stuck a piece of paper with the words “If you need help, just tap me.” on his backpack. Later, he used a small red card so that more people could see it easily. This idea won lots of support and became popular online very soon. So far, more than 300,000 volunteers across China have joined this project. These volunteers carry water, tissues (纸巾) and medicine. They help elderly people who feel tired or sick when going out alone.

Zhao believes that the project is not only about helping others, but also about building trust and warmth in society. “Small acts of kindness can add up to make our world a healthier and happier place,” he said. “I’ll continue this meaningful work and encourage more people around me to help others.”

1.1. What do the small red cards on the volunteers’ backpacks show?

A The volunteers take care of babies.

B The volunteers are college students.

C The volunteers are ready to offer help.

D The volunteers work in subway

解析：选C。1.细节理解题 C 原文卡片文字：“If you need help, just tap me.” 意思是需要帮助就可以找志愿者，代表志愿者准备好提供帮助。 A 错，不是照顾婴儿；B 错，志愿者不全是大学生；D 错，不止地铁站有志愿者。

2.2. Why did Zhao Chen start the volunteer project?

A His mother often got lost in big cities.

B He was deeply moved by a student’s kind act.

C He wanted to work with college students.

D His baby needed help from elderly people.

解析：选B。B 细节理解题 第二段：一位大学生帮助迷路的母亲，这件善举深深打动了他，于是他决定帮助有需要的老人。 A 错误：不是妈妈经常迷路，是一次迷路经历；C、D 文中无依据。

3.3. Which of the following can best describe Zhao Chen?

A Strict and patient.

B Brave and honest.

C Caring and creative.

D Quiet and serious.

解析：选C。3. 细节理解题 C caring and creative caring 有爱心的：主动帮扶老人；creative 有创意的：想出背包红卡这个新颖办法。 strict 严格的，brave 勇敢，honest 诚实，quiet 安静，serious 严肃，文中没有体现。

4.4. What’s the best title for this passage?

A A Warm Volunteer Aid Project

B Stories about Lost Elderly People

C Kindness from College Students

D Different Ways to Travel in Xi’an

解析：选A。4.主旨大意题 A 全文围绕赵晨发起的暖心红卡志愿帮扶项目展开。 B 只讲迷路老人，片面；C 大学生只是故事引子，不是主旨；D 出行方式，无关。