单选题 Vacation schools and extracurricular activities are mentioned in Para. 2 to illustrate alternatives to formal education pro- vided ______ by public schools.

A、 the importance of educational changes
B、 activities that competed to attract new
C、 immigrants to their programs
D、 the increased impact of public schools on students

【正确答案】 D

【答案解析】[试题分析] 事实判断题。
[详细解答] 第二段中作者指出：Kindergartens，vacation schools，extracurricular activities，and vocational education and counseling extended the influence of public schools over the lives of students．many of whom in the larger industrial cities were the children of immigrants．其中，extended the influence of public schools over the lives of students的意思说明，答案D符合文章意思，应此为正确答案。