第二部分 ：英语知识运用（共两节，满分30分）
第一节：单项填空（共20小题；每小题0.5分，满分10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标号涂黑。
21. ______ English language plays________ important role in international trade.
A. The; an B. The; the C. An; an D. An; the
22. The number of people invited _________ fifty, but a number of them ___________ absent for different reasons.
A. were; was B. was; was C. was; were D. were; were
