Smiling girls have their luck. It fits Huang Ruijia well. The 15-year-old student comes from Chengdu Experimental Foreign Language School. On March 22, 2014,she won third place(junior category)at the 12th China Daily "21st Century Lenovo Cup" National High School English Speaking Competition, which was held in Beijing. During the competition, many contestants kept a serious face. But Huang was smiling all the time. Her good manners also won her the Best Style prize at the contest. "Smiling shows confidence, which is an important quality for speakers," said Meng Qingtao, associate research fellow at the National Institute of Education Sciences, and one of the judges . "Huang's smile brought judges closer to her, and also cured her stress." Huang only became a smiling girl two years ago. At the time she was busy preparing for a speaking competition. One day, when she was practicing in front of the mirror, she was shocked by what she saw. "I saw a poker  face reciting a cold speech," said Huang. "Who would like to listen to a speaker like that?" Since then Huang decided to face everything with a smile. It has worked in speaking competitions and in many other situations in her life, such as building friendships. Once Huang and her friend had a fight and were mad at each other. After three days, Huang said she wanted to talk but didn't know how to start. She then decided to give a smile, the friend smiled back and gave her a hug in return. "This is the power of smiling," said Huang. "You can make a difference in your life simply by smiling." Meng Qingtao is a   _   according to the passage.
student judge nurse headmaster