Last summer I went through a training program and became a literacy(识字) volunteer. When I began to know what other people’s lives were like because they could not read, I realized the true importance of reading.
My first student Marie was a 44- year-old single mother of three. In the first lesson, I found out she walked two miles to the nearest supermarket twice a week because she didn’t know which bus to take. When I told her I would get her a bus timetable, she told me it would not help because she could not read it. She said she also had difficulty once she got to the supermarket because she couldn’t always remember what she needs. Since she did not know words, she could not write out a shopping list. Also, she could only know items by sight, so if the product had a different sign, she would not know it as the product she wanted.
As we worked together, learning how to read built Marie’s self-confidence, which encouraged her to continue her studies. She began to make fast progress and was even able to take the bus to the supermarket. After this successful trip, she reported how self-confident she felt.
At the end of the program, she began helping her youngest son, Tony, a shy first grader with his reading. She sat with him before he went to sleep and together they would read bedtime stories. When his eyes became wide with excitement as she read, pride was written all over her face. As she described this experience, I was proud of myself as well. I found that helping Marie to build self-confidence was more rewarding than anything I had ever done before.
As a literacy volunteer, I learned a great deal about teaching and helping others. In fact, I may have learned more from the experience than Marie did.
Marie didn’t go to the supermarket by bus because______.

A．she lived too close to the supermarket

B．she wanted to stay fit through walking

C．there were no bus stops in front of the supermarket

D．she had no idea which bus to take to the supermarket

What did the writer probably find when he was teaching Marie to read?

A．Marie learnt how to read really fast

B．Marie had no gift for learning how to read

C．It was hard for Marie to change her habits

D．It was hard for Marie to build self-confidence

We learn that in the end________.

A．Marie could read and became confident

B．the writer chose to help Marie’s son to read too

C．the writer decided to spend more time learning to read

D．Marie thought she learnt more from the experience than the writer

What is the passage mainly about?

A．The importance of learning to read

B．The difficulties that a single mother faced

C．The writer’s most unforgettable experience

D．The writer’s experience as a literacy volunteer