单选题 Pigeon is the common name for members of a family of birds; smaller species are commonly known as doves, but sizes of pigeons and doves______. The birds, almost worldwide in distribution, are most abundant in warm regions.
【正确答案】 C
【答案解析】解析：句子大意为：鸽是一种鸟类家族的统称；更小一级的种类则称为白鸽，不过，鸽和白鸽的体型是重叠的。这种鸟类虽然在世界各地广为分布，但在温带分布更多。在给出的选项中：surpass“超过”；transcend“超越”；overlap“重叠”；join“联合”。所以，正确答案是C。