语法与词汇 17.The bicycle has its own unique characteristics and cyclists are not a______group; they are people of a wide age range, cycling ability, experience, and traffic judgement, who are cycling for a variety of different reasons.
【正确答案】 A
【答案解析】本题考查形容词辨析。根据冒号后的内容判断，骑行者的人员构成不同、骑行目不同，homogeneous(由同类事物(人)组成的，同种类的)符合语义，故答案为[A]项。collective意为“集体的，共同的”；primitive意为“原始的，远古的”；traditional意为“传统的”。