掌握了GRE阅读里的长难句，到了实战演习的时候了。GRE阅读练习帮助GRE考生循序渐进地进行复习和总结。希望GRE考生在进行GRE阅读练习时，也按着考试时候的时间规定自己的练习，这样才能有效果。
Which of the following, if true, contributes most to an explanation of the change in ice cream sales?
(A)Because of low demand for its transcontinental flights departing from the airport, one airline ceased offering such flights as of December ,1993.
(B)There were fewer airline passengers who were traveling to destinations outside the United States in January1993 than there were in January1992.
(C)The average daily number of passengers at the airport in the month of January was the same for each of the three years
(D)In January 1993 a blizzard forced all flights out of the airport to be canceled for three days, stranding many passengers at the airport.
(E)There were five percent fewer commuter flights scheduled to depart from the airport in January 1993 than there were in January of either 1991 or 1992.
答案：D