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, 并在答题卡上将该项涂黑。
21．A Jian 10（Fighter-10）, China's most advanced military jet, made successful landing after engine failure．
A．a；an B．不填；an C．a；the D．the；不填
22．—Under such circumstances, what will you do?
—I'm not a quitter．
—Me ．
A．too B．neither C．either D．also
23．—What's his reaction when you told him that he had failed the test? Did he feel sad?
— , he didn't turn surprised and even asked to have dinner together．
A．On the other hand B．In short
C．On the contrary D．As a result
