A、It is a bestseller for the average person. B、It is written for those who study the universe. C、It is read mostly by his follow

M: So, can you think of a person that you admire most?
W: Well, I think that it must be Steven Hawking.
M: Isn’t he the professor at Cambridge with motor neurone disease?
W: That’s right. He has spent most of his life fighting the disease. He found out that he’d got it when he was student. He was at the age of only 21 then.
M: What did he do then?
W:(19)Well, he stopped wasting time. And he started applying himself to his studies. He knew that he risked dying young, but he became a leading cosmologist.
M: Oh, it seems that I kind of heard something about him.
W: Yes, you must have.(20)He wrote a book about universe for the average person. In fact, I remember seeing it on your book shelves.
M: Do you mean A Brief History of Time?
W: Yes,(20)it was a real bestseller, mostly to people who put it on their book shelves and didn’t read it.
M: Oh, how is he doing now?
W: Very well.(21)He’s succeeded in living far longer than anyone expected him to, and even doctors asserted that he would die in a few years.
M: But what kind of life could he have with such disease like that?
W: He’s managed to lead a fairly normal life. He has married twice and has three children and a grandchild now. I think he needs to use a computer for almost everything now, you know, speaking, writing, even eating.
M: He’s very unlucky, isn’t he?
W: Well, in a way.(22)But he considers himself lucky. You know, despite his disability, he is regarded as one of the greatest minds of our time.
19. What did Hawking do after realizing his serious disease?
20. What does the woman think of Hawking’s works?
21. What can we learn about Hawking’s life?
22. Why does Hawking consider himself lucky?