第二部分 英语知识运用（共两节，满分45分）
第一节 语法和词汇知识（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. Great changes ________ in the rural areas in the last two decades.
A. have taken place B. took place
C. have been taken place D. are happening
22. ________ in a white uniform, he looks more like a cook than a doctor.
A. Dressing B. To dress C. Dressed D. Having dressed
23. Many reporters hurried to ________ the accident after Kennedy Junior' death in Massachusetts.
A. cover B. see C. discover D. write
