来一篇平时做的文章试试，看得懂，但是得慢慢看。考试时间来不及细看。 
总共是13道题目，7道对错题，6道填空题，20分钟。 
How tennis rackets have changed 
In 2016,the British professional tennis player Andy Murray was ranked as the world’s number one.It was an incredible achievement by any standard-made even more remarkable by the fact that he did this during a period considered to be one of the strongest in the sport’s history,competing against the likes...