世界上绝大多数人在日常生活中习惯使用右手,只有很少的人习惯使用左手,人们常常称惯用左手的人为左撇子。左撇子生活在一个设计任何东西都只是为习惯用右手的人的世界里,往往会使他们感到十分沮丧,不但在日常生活中有诸多的不便,甚至还常常会遭到别人的嘲笑。 左撇子是什么因素造成的呢?这个问题虽至今尚无定论,但近来科学家认为是先天性因素起了主要作用。已知人类的大脑分为左右两 Most people in the world are accustomed to using their right hands in their daily life. Only a few people are accustomed to using the left hand. People often use left-handed people as left-handed people. Left-handed living in a world where everything is designed to be just a right-handed man tends to frustrate them, not only in everyday life but also in the often laughable manner of others. What is the cause of left-handed people? Although the issue is still inconclusive, scientists have come to believe that congenital factors have played a major role recently. It is known that the human brain is divided into two parts