by Japan's purchase of the Diaoyu Islands China and Japan lose the opportunity of the 4

问题补充：

by Japans purchase of the Diaoyu Islands, China and Japan lose the opportunity of the 40th anniversary of normalization of diplomatic ties to further promote the bilateral (双边的) relations.

A. Affected

B. Affecting

C. Having affected

D. To be affected

答案：

(答案→)A. Affected

B. Affecting

C. Having affected

D. To be affected

解析：此处是过去分词短语作原因状语，这里affect和主语China and Japan是被动关系，故用过去分词。句意：中日关系受日本购买钓鱼岛的影响，中国和日本失去了外交关系正常化40周年的进一步提高双边关系的机会。