Tyler was born infected with HIV and his mother was also infected．From the very beginning of his life，he was dependent on medications （药物） to enable him to survive．When he was five，he had a tube surgically（外科手术上） inserted in a vein（静脉） in his chest．This tube was connected to a pump，which 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．A few days before his death，Tyler beckoned（召唤） me over to his hospital bed and whispered，"I might die soon．I'm not scared．When I die，please dress me in red．Mom promised she's coming to heaven，too．I'll be playing when she gets there，and I want to make sure she can find me．"1．Why did Tyler wear a backpack on his back when he was young？ ____ A．Because his mother gave it to him as a gift．B．Because he had no right to choose but to wear it．C．Because he wanted to be different from the other kids．D．Because there was a pump in it，which could help with his disease．2．Tyler asked the writer to dress him in red when he died in order to ____ ．A．show red is his favorite color．B．see the writer again in the hospital．C．make his mother recognize him easily．D．persuade his mother to keep her promise．3．What's Tyler's attitude towards death？ ____ A．Excited．B．Fearful．C．Doubtful．D．Optimistic．4．What does the writer want to tell us by writing this passage？ ____ A．Even a child can teach us a lot．B．Patients should be treated with respect．C．People should have great courage to face the problems．D．We should try our best to help those who are infected with HIV．