精选优质文档-倾情为你奉上 2010年12月英语四级考试真题Questions 47 to 56 are based on the following passage.What determines the kind of person you are? What factors make you more or less bold, intelligent, or able to read a map? All of these are influenced by the interaction of your genes and the environment in which you were 47 . The study of how genes and environment interact to influence 48 activity is known as behavioral genetics. Behavioral genetics has made important 49 to the biological rev
