题目

— Which country do you think will win the first prize of the ____FIFA World Cup?—You mean the football match will be held in __________? A . twenty-one; Russia B . twenty-first; Russian C . twenty-first; Russia D . twenty-one; Russian 答案：C近年来广泛推广无氟冰箱，是为了保护大气层的A.对流层B.平流层C.中间层D.热层