原发性痛风的主要发病机制是（）
A.磷酸核糖焦磷酸酰基转移酶活性增高
B.黄嘌呤氧化酶活性增加
C.胰岛素抵抗
D.尿酸排泄减少
E.尿酸生成增多
参考答案：D
解析：只有很少数患者是因为磷酸核糖焦磷酸合成酶活性增强或次黄嘌呤-鸟嘌呤磷酸核糖转移酶缺乏引起痛风，80%～90%原发性痛风患者都是因为肾小管排泌尿酸减少或回吸收过多发病。
| With the sudden onset of severe psychotic symptoms, the individual is said to be experiencing acute schizophrenia (精神分裂症). "Psychotic" means out of touch with reality, or unable to separate real from unreal experiences. Some people have only one such psychotic episode. Others have many episodes during a lifetime but lead relatively normal lives during interim periods. The individual with chronic (continuous or recurring) schizophrenia often does not fully recover normal functioning and typically requires long-term treatment, generally including medication, to control the symptoms. These symptoms may include hallucinations (幻觉), incoherence, delusions, lack of judgment, deterioration of the abilities to reason and feel emotion, and a lack of interaction between the patient and his environment. The hallucinations may be a visual, auditory, or tactile. Some chronic schizophrenic patients may never he able to function without assistance of one sort or another. |
According to this passage, thinking that one can fly might be an example of ______.
A．medicine overdose
B．being out of touch with reality
C．recovering normal functioning
D．symptom control