Based on Paragraph 2, we can know that ______.

参考解析：

细节理解题。根据文章第二段第五句“Particularly hard hit are campuses in the Midwest, according to the institute”可知，中西部的高校受到的打击尤其严重，因此A项排除；根据文章第二段第三句“The 2016-2017 figures, though, revealed that first-time international students dropped 3 percent, indicating that the decline had begun before President Trump took office”可知，2016-2017的数据显示，国际学生已首次出现3%的下滑。这意味着在特朗普上台之前就已经开始下降，因此B项排除；C项在文中并未提及，因此C项排除；根据文章第二段第七句“Downing Thomas, the university’s dean of international programs, said that some other schools in the Big Ten are also experiencing declines, and none are seeing the rapid increases of the recent past”可知，十大联盟（Big Ten）中的其他高校也遭遇了人数下降，没有一所学校还有不久前的那种快速增长，因此D项（十大学校很难免受这种下降的影响）正确。故选D。