[解析]
(1)C.细节理解题。根据第二段But the sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times.(但这项运动的规则要求竞走者的膝盖在摆动腿的大部分时间保持伸直,一只脚始终与地面接触。)由此可知,竞走运动员是需要具备某些条件的运动员是因为运动员需要遵守特殊的规则。故选C项。
(2)D.细节理解题。根据最后一段As a result,she says,some of the injuries associated with running,such as runner's knee,are uncommon among race walkers(结果,一些与跑步有关的损伤,比如跑步者的膝盖,在竞走者中并不常见。)由此可知,竞走与跑步相比的优势是不太可能导致膝盖受伤。故选D项。
(3)A.细节理解题。根据最后一段Dr.Norberg说的话In fact,anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique(事实上,任何想尝试竞走的人都应该首先咨询教练或有经验的竞走运动员,学习适当的技巧。)可知,Dr.Norberg建议想尝试竞走的人征询专家的建议。故选A项。
(4)B.观点态度题。根据第一段Race walking shares many fitness benefits with running,research shows,while most likely contributing to fewer injuries.It does,however,have its own problem.(,研究表明,竞走和跑步一样有很多健身益处,而且它还很少导致受伤。不过,它也有自己的问题。)由此判断出作者对于竞走的态度是客观的。A.Skeptical怀疑的;B.Objective客观的;C.Tolerant容忍的;D.Conservative保守的。故选B项。