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

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：考查现在分词做状语。句意：在四月份，胡锦涛检查了在青岛的战舰，这标志着中国人民解放军海军成立60周年。这里是现在分词做结果状语， 选A。