21. When did Stephen Hawking pass away?

　　A. On January 8th, 1942    B. On March 14th, 2018    C. On March 24th, 2018

　　22. During studying in a small city near London, we know that     .

　　A. Stephen Hawking was the best student of his class

　　B. Stephen Hawking didn’t work hard at his lessons

　　C. Stephen Hawking began to study cosmology

　　23. What happened to Stephen Hawking when he was 21?

　　A. There was something wrong with his head

　　B. He couldn’t even blink to communicate except by moving fingers

　　C. He could neither talk nor move

　　24. How did Stephen Hawking communicate with others after the bad illness?

　　A. By mouth    B. By body languages    C. By a voice synthesizer

　　25. Why was Stephen Hawking so successful at his work?

　　A. Because he never hope in his own condition

　　B. Because life was not fair for him

　　C. Because he had a bad illness