在过去的100年中，左撇子的人数出现了大幅度的增加。根据最新统计，左撇子目前已经占到了全球人口的11%，而一个世纪前，左撇子在人口中的比例只占3%。加州大学的心理学及医学教育学教授克里斯·马克马诺斯对左撇子现象有着深入的研究。左撇子在全球人口中的比例达到11%正是他的统计成果。马克马诺斯教授认为，左撇子人数急剧增加，原因在于人们对左撇子的观念发生了变化，大人不再强迫小孩子使用右手。

Aristotle was one of those who could found a civilization, and while he thought of education as both a social value and an end in itself, he ascribed its chief importance (21) what might be considered a third basic concept of education: to train the mind to think, (22) what it is thinking about. The key is not (23) it knows but how it (24) any new fact or argument. "An educated man," Aristotle wrote in On the Parts of Animals, "should be able to (25) a fair offhand judgment as to the goodness or badness of the method used by a professor in his exposition. To be (26) is in fact to be able to do this."
The Aristotle view of education as a (27) has become the conventionally worthy answer today (28) college presidents and other academic leaders are asked what an education should be. An educated man, says Harvard President Bok, (29) a deep breath, must have a "curiosity in (30) the unfamiliar and unexpected, an open-mindedness in entertaining opposing points of view, (31) for the ambiguity that surrounds so many important issues, and a willingness to make the best decision he can in the fact of uncertainty and doubt."
This is an approach that appears to (32) more importance to the process of learning (33) to the substance of what is learned. The very old notion of the generalist who could comprehend all subjects has (34) been an impossibility. To make matters (35) more difficult, the fields of knowledge keep changing.

A. expressing B. exposingC. changingD. exploring