A-A+

Dr Pagel studied 122 family trees in that ther

2022-08-01 23:45:54 问答库阅读 168 次

问题详情

Dr Pagel studied 122 family trees in that there were more genetic changes in them.
A．Y
B．N
C．NG

正确答案：C
解析：见文章第13段，作者阐述了Dr．Pagel对树种的研究，但未提及选择该研究对象的原因。