Tang Ling often smoked cigarettes(香烟) in his school’s washing room. He  ____  smoking at the age of 14. One day he learnt that the NBA star Yao Ming, an ambassador(大使) to the Chinese Association on Tobacco Control (中国控烟协会), asked people not to smoke. Yao Ming was Tang’s favorite star, and his words meant a lot to him. He decided to give up ____  .
   According to the Chinese Association on Tobacco Control, about 350 million Chinese smoke.  Among them, 50 million are teenagers. Sun Jiangping of Beijing University said, “ Teenagers can get cigarettes  ____  , especially when their parents smoke or shops sell cigarettes to them. It’s very important for parents to help their children  ____   smoking.”
   A 15-year-old boy  ____  Li Kun from Beijing said his parents didn’t smoke. Because they  ____   smoking could make people feel  ____  ill, they only  ____   him to play with friends without smoking. ____   in such a good family helped Li say no to cigarettes. Some of his smoking classmates once told Li that smoking made boys look cool, but Li disagreed. He said, “Smoking is  ____   and it’s not cool at all. Please stop smoking now!”

下列各组物质在生物体内的功能，绝不相同的是（　　）

三六____

____×____ =____

____×____=____

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      Carol studies at Roosevelt High School. She is having a hard time passing exams. She has no interest in her homework, so she seldom finishes it on time.

     But there is one lesson she is doing well in. It is history. Carol always hands in her history homework on time. She respects the history teacher Mr Aragon. Carol feels that Mr Aragon treats her more than just a student. She feels other teachers look down on her.

      Carol's mother Maria told Mr Aragon that Carol wasn't doing well in her other lessons. Mr Aragon was surprised to learn that. "She is such a smart girl," he told Maria. Mr Aragon told Maria that he would talk to her daughter.

Carol felt embarrassed when Mr Aragon talked to her about the problems she was having in other lessons. But later Carol understood that Mr Aragon just wanted to help her. Mr Aragon and Carol had a discussion about what she could do to improve her marks in other lessons. They made a list of ways to help her to complete her homework on time, including setting a timetable for homework, cutting down some boring after-school activities, and having a friend help her with the homework. Carol decided to try these ways out to see which one would work best for her.