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第I卷 第一部分 阅读理解共两节，满分40分 第一节共15题每小题2分，满分30分 阅读下列短文，从每题所给的四个选项A、B、C和D中，选出最佳选项。 A Tyler was born infected with HIV and his mother was also infectedFrom the very beginning of his life,he was dependent on medications (药物) to enable him to survive.When he was fivehe had a tube surgically(外科手术上) inserted in a vein（静脉）in his chest.This tube was connected to a pumpwhich he carried in a small backpack on his back.Medications were connected to this pump and were continuously supplied through this tube to his bloodstream. At times,he also needed supplemented oxygen to support his breathing. Tyler wasn't willing to give up one single moment of his childhood to this deadly disease.It was not unusual to find him playing and racing around his backyard,wearing his backpack and dragging his tank of oxygen behind him in his little wagon（小推车）.All of us who knew Tyler were amazed at his pure joy in being alive and the energy it gave him.Tyler's mom often made jokes on him by telling him that he moved so fast she needed to dress him in red. That way,when she peered through the window to check on him playing in the yard,she could quickly spot him. This terrible disease eventually wore him down.He grew quite ill and,unfortunately,so did his HIV-infected mother.When it became clear that he wasn't going to survive,Tyler's mom talked to him about death.She comforted him by telling Tyler that she was dying too,and that she would be with him soon in heaven. | 
