1. (2020高二下·遂宁期末) 听下面一段独白，回答以下小题。

Joe was born in 1931. As a boy, he had a dream of becoming a doctor. But in 1948, when he<br />was 17, he had to work to help support his family. Joe worked in construction on the<br />railroad and served in the army for over 10 years. Then he worked in his hometown of Philadelphia<br />for 20 years. But he still kept his dream of going back to school. In 1979, at the age of 48,<br />Joe decided to make his dream come true. He finished high school and became a student<br />in the Community College of Philadelphia, where he took all the math courses he could.<br />In 1981, after earning a degree at the Community College, he was admitted to study computer math<br />at the University of Pennsylvania. In 1986, Joe completed his work on his master's degree.<br />Today at 56, Joe is studying for his doctor's degree. His dream is coming true.<br />Joe was born in 1931. As a boy, he had a dream of becoming a doctor. But in 1948, when he was 17,<br />he had to work to help support his family. Joe worked in construction on the railroad<br />and served in the army for over 10 years. Then he worked in his hometown of Philadelphia<br />for 20 years. But he still kept his dream of going back to school. In 1979, at the age of 48,<br />Joe decided to make his dream come true. He finished high school and became a student<br />in the Community College of Philadelphia, where he took all the math courses he could.<br />In 1981, after earning a degree at the Community College,<br />he was admitted to study computer math at the University of Pennsylvania.<br />In 1986, Joe completed his work on his master's degree. Today at 56, Joe is studying for his<br />doctor's degree. His dream is coming true.

1. （1） When did Joe begin to work?

   A . In 1931. B . In 1948. C . In 1979.
3. （2） What dream did Joe have when he was a boy?

   A . Becoming a doctor. B . Becoming a worker. C . Becoming a teacher.
5. （3） Where did Joe study computer math?

   A . In the Community College of Philadelphia. B . In high school. C . In the University of Pennsylvania.
7. （4） How old was Joe when he completed the work on his master's degree?

   A . At 17. B . At 55. C . At 58.