A. 骨与软组织对比增强 B. 中轴骨与四肢骨显像剂摄取比值增加 C. 肾呈淡影或不显影 D. “双条”征
A. Those who tend to overeat. B. Those who are given a lot of toys. C. Those who are given toys, talked to and played with. D. Those who can share their toys with their playmates.