阅读下面短文，然后根据短文内容回答问题
     Stephen Hawking was born in Oxford（牛津），England on the eighth of January, 1942. He went to school in ST Albans-a small city near London. After leaving school, Mr. Hawking went to Oxford University where he studied physics, then he went to Cambridge University（剑桥大学）．
      When he was 29 years old, Mr. Hawking got a bad illness. He couldn't speak or一 move without the help of a machine（机器）．Doctors said they, had no way to help him. He would die before he was 23. At first, Mr. Hawking became very sad. After a while, though, he began to see his life in a different way. He worked hard and later became a very famous professor（教授）．Today he still works at Cambridge University as a professor.

区别人种的主要根据是 (　　)

下列行为属于保护和节约自然资源的是 (     )

   The Internet has become part of teenage life. There’s a report on 3,375 students aged from 10 to 18 in seven Chinese cities. It says that 38% of them believe they use the Internet often. While most of them get useful information and use the Internet to help in their studies, some are not using it in a good way. Many are playing online games too much. A few even visit Web sites they should not look at. Bad things can happen if young people spend too much time on the Internet.
   In order to help young people use the Internet in a good way, a textbook on good Internet behavior has started to be used in some Shanghai middle schools this term. It uses real examples to teach students all about good ways of using the Internet. Some students also make online friends. But if you are meeting a friend offline, let your parents know.
   Teachers and parents all think the book is a very good idea. It will teach students how to be a good person in the online world. It will be a guide for teens using the Internet and keep students away from bad sites.