题目

My parents moved from Mexico to South Texas in the early 90s with the hope for a brighter future for their family of nine---my parents, four boys and three girls. My parents have always wanted the best for us and they have done everything possible to encourage us to get a university degree. Never did they think that by pushing us that direction, it also meant encouraging us to move away and be distant from each other. Initially(起初), getting accustomed to the American culture and lifestyle was very difficult for my parents. They come from a culture where kids grow up together, go to 如图为玉米种子的结构示意图，其中最重要并能发育成一个完整新个体的结构是(    )A．【1】种皮和果皮B．【2】胚乳C．【3】子叶、【4】胚芽、【5】胚轴、【6】胚根D．【3】胚芽、【4】子叶、【5】胚轴、【6】胚根