题目

My first reaction was annoyance. It was Friday afternoon, and I was within an hour of finishing my work for the week. As I was leaving, a nurse brought me one more patient message. The statement read: Mm. Jones called to say that she has had blurred vision （视觉模糊） ever since her medical test this morning. I smiled.  Suddenly our tests were causing eye problems.     This week my patients had questioned everything. My patient with high blood pressure had stopped coming to her treatment on the advice of an Internet chat room. A woman who had a mental problem was substituting （ 关节的基本结构包括关节头、关节窝、关节囊和关节腔。由于关节头和关节窝上覆盖着一层光滑的______，在关节腔内还有______，能够减小关节头和关节窝之间的摩擦，所以关节的灵活性得到增强。