题目选项分析

Research has shown that when speaking, individuals who have been blind from birth and thus they have never seen anyone gesture nonetheless make hand motions just as frequently and in the same way that sighted people do, and they will gesture even when conversing with another blind person.

Research has shown that when speaking, individuals who have been blind from birth and have thus never seen anyone gesture nonetheless make hand motions just as frequently and in the same way as sighted people do, and that they will gesture even when conversing with another blind person.