单选题 The airport's flow of international passengers for July is______ the figure for the corresponding month of the previous year.

【正确答案】 B
【答案解析】细节题。依据是第一段第二句的“has reached 80 percent of the figure for the corresponding month of the previous year,即"达到上一年相同月份的80%”,也就是比上年少20%。