You are 21 years old and live a happy life. ________ one day, your doctor tells you that you have a serious disease and may not live more than one year.How would you ____ ? What would you do? I think most of us might feel very _____ and give up our dreams and hopes for the future. Here is _____ one of the greatest scientists, Stephen Hawking , did. Hawking didn’t let the disease stop him from living his dream life. He went on with his study of the universe (宇宙) and _____ around the world to give talks . In 2002, Hawking visited China and _____ to students in Hangzhou and Beijing. Because of the disease,Hawking had to sit in his wheelchair and speak _______ a computer. He told the students about his theories(理论) on some questions, for example, _____ time is , how the universe began, and what black holes are. Hawking became famous in the early 1970s. In 1988, he wrote A Brief History of Time. The _____ explains a difficult theory in an easy way and it sold very well. Stephen Hawking is a man with a _____ will(意志) and people think he is the greatest scientist in physics since Albert Einstein. 小题1:
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等差数列由三个数构成,三项和为21,平方和为179,求此数列
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