【正确答案】
A
【答案解析】[解析] 他每天跑5英里以保持身体健康。句中fit健康的。healthy:健康的,如:The children look very healthy.孩子们看来很健康。tired:疲劳的,如:I was too tired to walk any further.我累得再也走不动了。energetic:精力充沛的,如:He seems an energetic person.他似乎是一个精力充沛的人。athletic:运动的,健壮的,如:John is all athletic boy. He is good at running.约翰体魄健壮。他擅长跑步。只有healthy意思上和fit最接近。