Left-Handedness
左撇子的美麗與哀愁
Scientists still aren’t sure why people become left-handed. Some believe that it occurs due to gene movements in the spinal cord before birth. Another study has said that there are social reasons why few people are lefties. People may choose to become right-handed to fit in with others.
Though there are challenges, being left-handed can be good in many ways. For starters, left-handers might do better in sports. This is because right-handers who play against them are not used to their moves.
科學家仍然不確定為什麼有些人是左撇子。有的人認為左撇子的生成是因為在出生前脊髓的基因轉移（編按：為群體遺傳學中的基因流動 gene flow，也稱為基因移徙，是變異基因在族群間相互的傳遞轉移）。另外的研究指出，為何很少人是左撇子也有社會因素。人們也許為了要融入其他人，選擇改用右手。
雖然有很多挑戰，當個左撇子可以有許多好處。首先，左撇子在運動上可能表現得更傑出。這是因為跟他們對戰的右撇子不習慣他們的動作。
生活必備字詞：
occur vi. 發生
social a. 社會的
fit in with... 融入……
Though Sally is new here, she fits in with her classmates.
本文節錄自《常春藤生活英語》雜誌，完整內容請見八月號。
