Leaping on a narrow balance beam(平衡木)is not easy.But Lola Walter,a 13-year-old gymnast,is an expert at it. To perfect her skills,Lola　1    for four hours a day,five days a week.At the state championships in March,she finished seventh out of 16 girls. 1.A.runs　　B.teaches C.trains　　D.dances 答案　1.C　文章的首段为主旨句,根据主旨句可知Lola是练平衡木的,为了使技巧完美,她每天要训练4个小时。故选择C项。