What does this world map show the distribution of?
(A) Total number of internet connections
(B) Medals won at the 2010 Beijing Olympics
(C) Total numbers of tourist arrivals
(D) Number of dentists per thousand population
答案:登入後查看
統計: A(0), B(7), C(2), D(1), E(0) #2135720
統計: A(0), B(7), C(2), D(1), E(0) #2135720