----- Why do you think Liu Xiang is one of the best sportsman?
----- , he is the world record holder in men’s 110m hurdles, which is considered to be a big progress for Chinese athletes.
A. For the first time
B. Believe it or not
C. To give an example
D. To tell the truth
网友回答
A. For the first time
B. Believe it or not
(答案→)C. To give an example
D. To tell the truth
解析：考查交际用语：A. For the first time第一次B. Believe it or not信不信由你， C. To give an example举个例子D. To tell the truth说实话，句意：--你为什么认为刘翔是最好的运动员？--举个例子，他是男子110米栏的世界纪录保持者，这被认为是中国运动员的一个很大的进步。选C。