精神分裂症的多巴胺（DA）功能紊乱与临床症状群的关系，目前较为支持的是（）
A.精神分裂症患者脑内主要存在多巴胺功能亢进，多巴胺功能亢进引起精神分裂症的阳性症状及阴性症状
B.中脑边缘系统及中脑前额叶系统的多巴胺功能均亢进
C.中脑边缘系统的多巴胺功能亢进可能与阳性症状有关，而前额叶的多巴胺功能亢进可能与阴性症状有关
D.中脑边缘系统的多巴胺功能亢进可能与阳性症状有关，而前额叶的多巴胺功能不足可能与阴性症状有关
E.中脑边缘系统的多巴胺功能不足可能与阳性症状有关，而前额叶的多巴胺功能亢进可能与阴性症状有关
参考答案：A
解析：目前较为支持的是多巴胺假说，精神分裂症患者脑内主要存在多巴胺功能亢进，多巴胺功能亢进引起精神分裂症的阳性症状及阴性症状。
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| Dick had a toothache. His mother 1 him to the dentist. Before they saw the dentist, they 2 wait "Please come in!" said a nurse in a 3 dress. Dick looked afraid 4 he came into the dentist's room. "Now tell me. What's wrong 5 you?" the dentist asked. "I feel terrible. I think I've a 6 tooth", said the boy. "Well, let me have a 7 ", said the dentist kindly. Dick 8 his mouth 9 the dentist began to examine (检查) his 10 . | |||
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