题目

阅读下面材料，根据其内容和所给段落开头语续写两端，使之构成一个完整的故事。Inmy early forties, I was diagnosed with late stage breast cancer. As anon-smoker who ate the right foods and exercised daily, all I could think was,Why me? My great fear and anxiety of the long term treatment aheadrestricted me from seeing a bright side.Afew months later, my neighbor Greg fell off a roof and was paralyzed (瘫痪) from the waist down. Only thirty at the time, he was anenthusiastic outdoors man, besides he had a six-week-old baby. I could onlyimagine his despair. In a已知a，b，c∈R，a2+2b2+3c2=6，求a+b+c的最大值．