In April President Hu inspected the warships in Qingdao the 60th anniversary of the

问题补充：

In April,，President Hu inspected the warships in Qingdao， the 60th anniversary of the founding of the PLA Navy.

A. marking

B. marked

C. having marked

D. being marked

答案：

(答案→)A. marking

B. marked

C. having marked

D. being marked

解析：考查非谓语动词。非谓语动词做状语，其后有宾语，故与逻辑主语是主动关系，且表示的动作与谓语动词的动作同时进行，用现在分词，选A。