[填空题]The majority of people, about nine out of ten are right-handed. Up to recently people who were left-handed were considered {{U}} (36) {{/U}} , and once children showed this tendency, they were forced to use their right hands. Today left-handedness is {{U}} (37) {{/U}} expected. But it is still a {{U}} (38) {{/U}} in a world where most people are right-handed. For example, most tools and devices are {{U}} (39) {{/U}} for right-handed people. In sports, by {{U}} (40) {{/U}} , doing things with a left hand or foot is often an advantage. Throwing, kicking or {{U}} (41) {{/U}} from the wrong side may throw opponents off, who are more {{U}} (42) {{/U}} to dealing with the majority of players who are right-handed. This is why in many games at professional level, a higher {{U}} (43) {{/U}} of players are left-handed than in the population as a whole. Even so, no one is totally right-sided or left-sided. {{U}} (44) {{/U}} . Of course, some activities such as shaking hands are only do