The first few years in the 21st century the rapid rise of China as a world economic power.
A. witness
B. has witnessed
C. will witness
D. have witnessed
网友回答
A. witness
(答案→)B. has witnessed
C. will witness
D. have witnessed
解析：考查时态题。根据The first few years in the 21st century可知应该用现在完成时。本句是无生命的东西作主语，此处的the past two years作主语。witness 解释为：见证了。句意：21世纪的前几年见证了中国做为经济大国的快速成长。选B。