0形腿畸形常发生于（）

A.脊髓灰质炎

B.急性脊髓炎

C.下肢静脉曲张症

D.佝偻病

E.结核病

The notice which is based on original information is indicatedby（）nexttothenotice number.

A.a star

B.a dot

C.a dash

D.a circle