As soon as the weather gets cold in northern China,there will be some people in the street (1)___(sell)a kind of delicious traditional food—Bing Tang Hu La,or Tanghulu for short. This snack,which (2)___ (appear)for the first time in Beijing and Tianjin during the ...
Cheung GK, Zimmermann T, Nagappan N (2014) The first hour experience: how the initial play can engage (or lose) new players. In: First ACM SIGCHI Annual Symposium on Computer-Human Interaction in Play, ACM, pp 57–66 Chia PH, Yamamoto Y, Asokan N (2012) Is this app safe? a large...