A 5-month-old infant is brought to the clinic by his parents because he "cries too much" and "vomits a lot. " The infant’s birth weight was 6 pounds, 10 ounces, and his current weight is 7 pounds, 4 ounces, falling below the 5th percentile on a standard growth chart. Which of the following data would the nurse identify as the priority

A. Frequency of regular checkups.
B. Feeding pattern.
C. Pattern of weight gain.
D. Family dynamics.

中 * * 党对马克思主义的创造性发展主要表现在①实行无产阶级专政 ②实行“工农武装割据”理论 ③和平“赎买”民族资本   ④建立社会主义市场经济体制

A．①②③

B．①③④

C．②③④

D．①②④