句意：在脚踝手术恢复两年之后，中国田径明星刘翔正式宣布退役

【题目】阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卡标号为1-10的相应位置上。

China's top track and field star, Liu Xiang,  【1】  (office) announced his retirement on Tuesday through his Weibo account   【2】  being sidelined for more than two years in rehabilitation修复of an ankle surgery. The 31-year-old athlete star chose a low-key way to announce his retirement. "From today on, I will say goodbye to my  【3】  (profession)   athletics career. It's a decision   【4】  (make) through thorough consideration. I have no other   【5】  (choose) despite reluctance and pain. Goodbye, my track, my hurdles!"  Rumors of Liu's retirement  【6】 (report) periodically定期的 since he fell down at 2012 London Olympic Games 110-meter hurdles' preliminary contest,  【7】  was the last match he ever attended. In Athens, Liu tied the 12.91 seconds world record to claim the gold medal .His breakthrough of winning the Olympics and world championships proved  【8】  Asian people can be competitive 【9】  Western counterparts in men's sprint冲刺 events at the highest level. That's  【10】  huge motivator激励 that should be reckoned考虑 with.