参考答案：大量移民人口的存在也许给美国学校带来了一些学生学业问题。我认为，那些来自某些穷国未受过良好教育的贫穷家庭的孩子并没有从美国教育制度中受益。他们在学习上存在着许多困难。让我尤其感到困扰的是，我们经常把孩子在学习中产生的困难归因于贫困、父母或生活环境，我们应该停止这样做。贫穷不是孩子学习困难的直接原因。
另一方面，家长与家庭环境确实是重要因素。如果家长认真对待学校教育，最终孩子也会认真对待，特别是在掌握文化技能的低年级阶段。哪怕是在破旧的教室里面，他们也会健康成长。家长认真对待学校教育有可能意味着一段时间内放弃某些就业机会，从而确保孩子放学后做有益的事。

解析：[听力原文]
The presence of large numbers of immigrants might explain some of the student performance problems in American schools. I think children of poor, ill-educated families from some poor societies do not benefit from American education. They have many difficulties in their study. What particularly troubles me is that we need to stop blaming poverty, parents or the home environment for the difficulty a child has in learning. Poverty is not directly to blame for such difficulties.
But on the other hand, parents and the home environment are crucial factors. If parents take school seriously, by and large children will too, especially in the early years when literacy skills are being mastered, and they will thrive even in run-down school buildings. Taking school seriously may mean that a parent gives up some employment opportunities for a while to make sure that children are doing something constructive after school.