Competent students are those who can see the application of a theory or a concept to a specific （） example.

单项选择题Hosting the 2008 Olympics provided China with an opportunity to （）its unprecedented progress.

A. demonstrate
B. deduce
C. distinguish
D. disperse

单项选择题There was something feverish, even （）, in the manner in which shoppers crowded into shops in the last days before Christmas.

A. desperate
B. courageous
C. discriminating
D. courteous