单项选择题
A.sold openly B.no longer a temptation C.a major factor in the passage of the Volstead Act D.brought across the Mexican and Canadian borders
A.become a permanent student in the USA B.take up a summer course in the USA C.go to enjoy a tourist's life in the USA D.spend a summer visiting in the USA
A.articles about how to obtain first-hand experience B.advertisements of different schools C.articles about important decisions D.introductions to summer school courses