TOEFL Listening: TPO-TOEFL阅读TPO - TA6Y4I7448MY959NN$

According to paragraph 5, which of the following is true about the benefits of early intervention programs? A. These programs produce good short-term benefits but few long-term benefits. B. Only the most expensive programs provide substantial benefits. C. The Head Start provides a range of benefits that no other program can provide. D. Some children benefit more than others do from these programs.