"We identified basic learning processes that are affected by early institutionalization," notes Seth Pollak, professor of psychology and pediatrics at the University of Wisconsin, who was the study's lead author. "Policies that speed the time in which children can be removed from institutionalized care so they can develop within family contexts should be implemented to decrease the likelihood of learning problems later in children's lives."

　　1. The passage is mainly written to

　　.

　　A. compare two childcare systems B. criticize the institutional childcare

　　C. present a new research finding D. introduce the basic learning process

　　答案解析：答案为C。本题为主旨大意题。本文运用了总----分----总的写作风格。注意文章第一段 “The amount of time children spend in institutional caremay affect how their brains develop.” 意为 “儿童受到机构式照顾的时间长短或许会影响大脑发育”，和最后一段"Policies that speed the time in which children can be removed from institutionalized care so they can develop within family contexts should be implemented to decrease the likelihood of learning problems later in children's lives." 可知，儿童应摆脱机构式照顾，而应在家庭环境下培养，从而降低他们以后有学习障碍的可能性” ，因此，文章主旨是在陈述一种新的发现。A，B，D都不是文章的主旨。

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