Passage Two
51. C. Scholars and policymakers have different opinions about it.
52. A. Pre-K achievements usually do not last long.
53. B. When it is made part of kids' education.
54. D. She is a firm supporter of pre-K.
55. C. Early intervention.
Passage Two
51. C. Scholars and policymakers have different opinions about it.
52. A. Pre-K achievements usually do not last long.
53. B. When it is made part of kids' education.
54. D. She is a firm supporter of pre-K.
55. C. Early intervention.
责任编辑：lc_木子
