There is no doubt that the Diaoyu Islands are part of China and what some Japanese have done recently is actually insult against China’s territorial sovereignty.
A. a;/
B. a; the
C. the;/
D. /; an
网友回答
A. a;/
B. a; the
C. the;/
(答案→)D. /; an
解析：句意：不容怀疑钓鱼岛是中国的一个组成部分，日本人所做的一切实际上都侵犯了中国的领土主权。这里part of是……的组成部分；第二空insult是“冒犯”在这里指一种冒犯，所以前面用不定冠词来修饰，故选D。