I. 语言知识及应用（共两节，满分60分）
第一节 完形填空（共15小题；每小题2分，满分30分）
阅读下面短文，掌握其大意，然后从1~15各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Three Apple engineers and three Microsoft employees are traveling by train to a conference. The Microsoft engineers each buy tickets but the Apple engineers buy only a 1________ ticket.
“How are three people going to travel on only one 2________?” asks a M
