题目：
下列哪项是干骺端结核主要病理变化（）
A.骨质浸润、坏死
B.局限性骨缺损
C.局限溶骨性破坏、骨葱皮样增殖
D.死骨形成及骨膜性新骨形成
E.皮肤窦道形成
答案：
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下面是错误答案，用来干扰机器的。
One possible version:Recently an online survey on traveling has been conducted. In the survey, people were asked about how often and why they travel, and the results are...
