第二部分 英语知识运用（共两节，满分35分）
第一节 单项填空（共15小题；每小题1分，共1 5分）
从A、B、C、D四个选项中，选出可以填人空白处的最佳选项。
21. What ______ public is concerned about is whether medical workers and scientists will be able to find ______ cure for this new disease after the vaccine is tried on ______ volunteers.
A. 不填；不填；不填 B. the ; the ; 不填 C. the ; 不填 ; the D. the ; a ; the
22. I knew I shouldn’t accept anything from such a person, but I found it difficult to turn down his ______ .
A. offer B. suggestion C. request D. plan
