参考答案

正确答案：C
[答案]C。[解析] 题干分析：大意：大多数惯用左手的妇女用左手怀抱婴儿，空出右手，这样她们感到舒服。利用题干中出现的核心结构“holding their babies in their left arm and keep the right arm free”作为答案线索，发现答案相关句：Careful studies have shown the fact that 80 percent of mothers hold their infants in their left arms，holding them against the left side of their bodies：If asked to explain the significance of this preference most people reply that it is obviously the result of the predominance of right-handedness in the population．By holding the babies in their left arms．the mothers keep their dominant arm free for manipulations ．…It emerges that 83 percent of right-handed mothers hold the baby on the left side、but so do 78 percent of left-handed mothers．划线句子中提到了78%惯用左手的母亲是左手怀抱婴儿，但是并没有提到这样做会使他们感到舒服，所以判断问题句的说法为“没提到”。