Directions:

Write a poster to your schoolmates, informing them of a new book to be released. You should write about 100 words on ANSWER SHEET 2.

Do not sign your own name at the end of the letter; use "Li Ming" instead.

Do not write the address.

诊断跟骨骨折应询问和检查脊柱和颅脑情况原因是（）。

A.脊柱和颅脑容易损伤

B.与跟骨骨折相比脊柱和颅脑骨折处于次要地位

C.患者从高坠下冲力大，足先着地，继而臀部着地，脊柱前屈，可合并脊柱压缩性骨折，甚至可上传引起颅脑损伤

D.跟骨骨折后，外力无缓冲，直接的作用颅脑和脊柱

E.脊柱和颅脑受伤会传导至跟骨，引起跟骨骨折