21. It can’t be denied that the Diaoyu Islands are _______ part of China and what some Japanese have done recently is actually a defiance(挑衅，藐视) against _______ Chinese.
A. a; / B. a; a C. the; / D. /; the
22. After hours of searching, their patience was and they found what they were looking for.
A. rewarded B. awarded C. balanced D. required
