第二部分：英语知识运用（共两节，满分45分）
第一节：单项填空（共15小题；每小题1分，满分15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21．Brussels, the capital city of Belgium, is ________ home to the European Union, ________ organization of European nations．
A．the; an B．a; an C．不填；an D．不填; the
22．___for the fact that she got hit by a car and broke her leg on her way to school, she might have passed the exam．
A．Had it not been B．Hadn’t it been
C．Was it not D．Were it not
