单选题 What does the writer worry?

A、 A cracked shinbone caused by too much running on hard pavement.
B、 His suffering from a kind of women's disease at the age of more than 54.
C、 His being close to a disease that causes older people to shrink in height and break bones easily.
D、 His bones are weaker than average women.

【正确答案】 C

【答案解析】[精解] 文章细节题。题干问作者忧虑什么，文章第三段又说“……自己没有患骨质疏松……这种病让老年人身体收缩而身高降低骨头易碎……但自己的症状与这种病差不多了……”，这与选项[C]一致，为正确答案。