It was not until you phoned me that I knew what had happened.(强调句)

III.阅读理解

　　"I'm at peace with it.I have no regrets."Li Na said this words about her retirement(退役)from professional (职业)tennis.During Sunday's news meeting，she couldn't stop crying，showing us just how hard it was for her to make this decision.

　　In July，Li accepted a fourth operation on her knee and said she hoped to be back for the Dongfeng Motor Wuhan Open，to be held in her hometown，but was unable to recover from her injuries."This sport is just too competitive，too good for me to play at below 100 per cent because of knee injuries，"Li said.

　　It's certainly the end of an era，or in Swiss tennis legend(传奇)Martin Hingis' words，"A sad day for Chinese tennis and for the sport in general."

　　Born in 1982，at the age of 17，Li went professional and began training in the state sports system.After her win at the 2011 French Open，Li became the first player from Asia to win a Grand Slam(大满贯)singles title.She went on to get another Grand Slam title at the Australian Open this past January.At the height of her career，she became the world's No.2 player behind the US Serena Williams.

　　Besides her success on the court，Li won millions of fans with her warm and easy­going character outside the court.Her frequent joking in interviews about life with Jiang Shan，35，her former coach and husband of nine years，helped her become a global figure.Li's biggest success，however，is her great help to the rise of tennis in China.

　　Li is more than a sports super star.She's an encouragement to millions.In that sense，she's achieved more in her professional life than most can ever dream.

　　【语篇解读】　本文介绍著名网球运动员李娜退役，回顾了李娜的成功之路和对中国网球做出的贡献。

1．Why did Li Na cry during Sunday's news meeting?