【A,Hard,Task】 Hard disk

  Census taker Li ZhJying and her col-league started their work knocking ondoors in Shuiduizi, a compound com-munity in Chaoyang District, Beijing,on the morning of November 8.
  As part of China"s sixth national census,about 6.5 million census takers fanned outacross the world"s most populous country onNovember 1-10, visiting more than 400 mil-lion households and trying to get an accuratecount of the population.