A、18 years. B、20 years. C、30 years. D、38 years. A对话中女士提到这位拳击冠军已经从事18年拳击运动。

W: Hi, Peter, I know you are a great fan of sports, right?
M: Yeah, my spare time is usually spent on various kinds of sport. In particular, I like boxing. Very exciting, you know.
W: Then, I bet you will love this piece of news. (5)Former heavyweight champion boxer John Ruiz was retiring.
M: Really? Wow, that’s a pity. He is said to be one of the greatest boxers in the world.
W: The news says he made a statement that(6)he was leaving after an 18 years’ career in boxing.
M: He started to fight in his 20s, I remember.
W: Then, he is in his late 30s, right?
M: Yeah, that’s right.(7)You know, he is 38 years old now.
W: What records did he get?
M: As far as I know, he did very well in boxing. Ruiz defeated three world champions—Evander Holyfield, Hasim Rahman and Tony Tucker. He fought in 12 championship fights and became the first Latino heavyweight champion.
W: Let’s see what the news reports about his future plan are.
M: Look, the paper says(8)he plans to move his family from Las Vegas to his home in the Boston area and open a boxing gym in the city.
Questions 5 to 8 are based on the conversation you have just heard.
5. Which sports did John Ruiz do?
6. How long has John Ruiz been an athlete?
7. When did John Ruiz start his career?
8. What does the news say about John Ruiz’s future plan?