（）患者可在耳廓上触及痛性小结，系由于（）所致。
参考答案：痛风；尿酸钠沉着
_____, he talks a lot about his favorite singers after class.
A．A quiet student as he may be
B．Quiet student as he may be
C．Be a quiet student as he may
D．Quiet as he may be a student
什么是信息系统的概念结构？
