阅读下列短文，从下面每小题所给的A、B、C、D 四个选项中，选出最佳选项。Stephen Hawking, a disabled man with a strong will, who died on March 14, 2018, was born in Oxford, UK, in 1942. He was a world famous scientist and expert on space and time. Stephen was trying to find the answers to some very big questions, such as: How did the universe begin? How will it end?
When he was a student at university, Stephen studied math and science. Then, at the age of twenty, he became very ill. He was so young, but the doctors said to his family, "He has only two more years to live. "
The doctors were wrong. He didn't die. He couldn't walk, but he used a wheelchair. He talked with the help of a computer. After Oxford, Stephen went to Cambridge University. Three years later, in 1965, he became a doctor of philosophy (哲学).
Because of his health problems, it was difficult for him to draw diagrams or to write. So he started to think in pictures. With this new way of thinking, he became one of the most famous scientists in the world. Then in 1988, he wrote his first important book, A Brief History of Time. It sold about 25 million copies in about 40 different languages.
Stephen Hawking made great achievements in cosmology with his studies searching the answers to the Big Bang and Black Hole in the universe, which brought him great fame as a leading figure in the science world even though he became totally unable to move in two thirds of his whole life.
